Training Readiness
for Endurance Athletes

Training Readiness
for Endurance Athletes

Training Readiness for Endurance Athletes

Like you, we don't stop at the basics. App built for cyclists, runners, and endurance athletes: reach your potential with informed training.
Like you, we don't stop at the basics. App built for cyclists, runners, and endurance athletes: reach your potential with informed training.
The Outsiders app Today tab showing 96% Training Readiness (Prime status) with actionable guidance for athletes. Training Load Ratio at 0.84 optimal with weekly trend graph. Body metrics display including 45 bpm heart rate and 97% blood oxygen. Training readiness system for cyclists, runners, and endurance athletes combining training load, recovery metrics, and sleep data to guide daily training decisions.
The Outsiders app Today tab showing 96% Training Readiness (Prime status) with actionable guidance for athletes. Training Load Ratio at 0.84 optimal with weekly trend graph. Body metrics display including 45 bpm heart rate and 97% blood oxygen. Training readiness system for cyclists, runners, and endurance athletes combining training load, recovery metrics, and sleep data to guide daily training decisions.
The Outsiders app Today tab showing 96% Training Readiness (Prime status) with actionable guidance for athletes. Training Load Ratio at 0.84 optimal with weekly trend graph. Body metrics display including 45 bpm heart rate and 97% blood oxygen. Training readiness system for cyclists, runners, and endurance athletes combining training load, recovery metrics, and sleep data to guide daily training decisions.

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Editors' Choice

App Store

App of the Day

App Store

Apps We Love

App Store

Essential Health & Fitness Apps

App Store

Achieve Your Fitness Goals

App Store

Editors' Choice

App Store

App of the Day

App Store

Essential Health & Fitness Apps

App Store

Apps We Love

App Store

Achieve Your Fitness Goals

App Store

Train smarter by knowing your daily readiness, from full rest to hard sessions and everything in between.

Prevent overtraining and injury by keeping your training load in the sweet spot.

See where you’re spending your training time, and optimize your effort across heart rate and power zones.

Understand the patterns behind your progress, your data analyzed at a deeper level.

Ready to Train?

Your daily Training Readiness score tells you when to push and when to hold back. Based on your training load, body metrics, and sleep quality: as personal as it gets.

Training Readiness tells you how prepared your body is to train. It weighs your training load ratio, sleep quality, and body metrics into one personal score - so you always know when to push, when to dial it back, and when rest is the smarter move.

Balance your training load with what your body can handle. Training Load Ratio compares your recent effort to your long-term fitness base. Keep it in the right range and build fitness steadily. Push too far above it and injury risk climbs fast.

Body metrics that show how well you recovered overnight. Sleeping heart rate, HRV, wrist temperature, respiratory rate, and blood oxygen - tracked while you sleep and fed directly into your score, so your readiness reflects your actual recovery, not just your training log.

See how last night's sleep is shaping today. The Outsiders analyses your sleep duration, stages, and consistency to show how last night's rest is shaping today's capacity. Better sleep, better adaptation, better performance.

Always on Your Wrist

Check your vitals without pulling out your phone. Training Readiness, Training Load Ratio and body metrics - right on your watch face with complications.
The Outsiders Apple Watch app complications for training and recovery tracking. Watch face shows Training Readiness at 96% (prime), training load ratio 0.84 (optimal), sleep duration 8h 39min (good), sleeping heart rate 45 bpm (low), blood oxygen 97% (normal), respiratory rate 11.5 br/min (normal), wrist temperature 36.3°C (normal), and HRV 52ms (elevated). Designed for cyclists, runners, and endurance athletes to monitor daily readiness and recovery metrics.
The Outsiders Apple Watch app complications for training and recovery tracking. Watch face shows Training Readiness at 96% (prime), training load ratio 0.84 (optimal), sleep duration 8h 39min (good), sleeping heart rate 45 bpm (low), blood oxygen 97% (normal), respiratory rate 11.5 br/min (normal), wrist temperature 36.3°C (normal), and HRV 52ms (elevated). Designed for cyclists, runners, and endurance athletes to monitor daily readiness and recovery metrics.
The Outsiders Apple Watch app complications for training and recovery tracking. Watch face shows Training Readiness at 96% (prime), training load ratio 0.84 (optimal), sleep duration 8h 39min (good), sleeping heart rate 45 bpm (low), blood oxygen 97% (normal), respiratory rate 11.5 br/min (normal), wrist temperature 36.3°C (normal), and HRV 52ms (elevated). Designed for cyclists, runners, and endurance athletes to monitor daily readiness and recovery metrics.

Track Your Progress

Monitor your training to know whether you're building sustainably or risking burnout. Analyze intensity distribution and see what your metrics say about your fitness progress.

Training Summary keeps your build-up honest. Weekly load, distance, duration, elevation, and active energy - with week-on-week comparisons that help you plan ahead, build at a sustainable pace, and catch unsustainable spikes before your body does.

Intensity Distribution metrics show whether your training matches your goal. Training Focus, heart rate zones, and cycling power zones in one view - so you can see exactly how your effort is split and adjust the balance to match what you're training for.

Fitness metrics tell you whether your training is making you fitter. Cardio fitness, endurance fitness, and cycling FTP in one place - three metrics that together show how well your body performs, adapts, and sustains effort over time.

Set Targets That Matter to You

Create custom training goals for distance, duration, elevation, training load, sessions, or specific heart rate and power zone targets across any workout type. Track weekly, monthly, or yearly progress.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.
  • Custom training goals interface in The Outsiders app for endurance athletes, cyclists, and runners. Shows progress tracking for multiple goal types: distance (weekly 34/40km, yearly 4,598/6,000km), training load (monthly 1,299/3,200), heart rate zone 5 duration (weekly 26/30min), power zone 6 time (monthly 14/30min), elevation gain (weekly 429/1,000m, yearly 34,686/80,000m), workout duration (weekly 2h51min/4h), energy expenditure (monthly 12,291/10,000 kcal exceeded), session count (weekly 3/4), and anaerobic zone time (monthly 53min/1h). Customizable performance targets across any workout type with weekly, monthly, and yearly progress tracking for structured training programs.

As a product designer and athlete, I approach both with obsessive attention to detail and intention behind every decision. The Outsiders reflects that. Every metric serves a purpose, every button has intent. We focus on the data that matters - metrics that give you a clear understanding of your fitness and help you make smart training decisions. The interface follows the same principle: thoughtful layout, actionable insights, nothing unnecessary.

As a product designer and athlete, I approach both with obsessive attention to detail and intention behind every decision. The Outsiders reflects that. Every metric serves a purpose, every button has intent. We focus on the data that matters - metrics that give you a clear understanding of your fitness and help you make smart training decisions. The interface follows the same principle: thoughtful layout, actionable insights, nothing unnecessary.

— Andrej, Co-founder & Designer

— Andrej, Co-founder & Designer

Andrej Mihelic, co-founder and designer of The Outsiders app, and an endurance runner training outdoors
Andrej Mihelic, co-founder and designer of The Outsiders app, and an endurance runner training outdoors
Andrej Mihelic, co-founder and designer of The Outsiders app, and an endurance runner training outdoors
Apple Health and Apple Fitness app icons showing The Outsiders integration with iOS health tracking
Apple Health and Apple Fitness app icons showing The Outsiders integration with iOS health tracking

Your Data Has More to Say

Connect to Apple Health and your workout history loads automatically. The best part? Deep analysis showing how each session impacts your training.

Your route, exactly as you ran or rode it. Terrain, climbs, and turns - all on the map.

Every key number from your session. Duration, distance, elevation, speed, power, heart rate, and active energy, compared to your 30-day average.

Zones break down how your time was actually spent. Training focus, heart rate, and power zones for every session.

Segment by segment, nothing hidden. Speed/pace, heart rate, power, and elevation gain broken down per split.

Advanced metrics tell you if your training went to plan. Relative Intensity, Variability Index, Efficiency Factor, and Decoupling in one place.

Charts turn your session into a full picture. Heart rate, speed, elevation, and power plotted over time.

All Data Stays on Your Device

All analysis happens on your iPhone. Your personal information belongs to you, not to AI models or ad platforms. No user accounts. No servers.
The Outsiders privacy feature showing local data processing with app icon and Apple Health icon connected by arrows on iPhone. Lock icon symbolizes security. All training analysis happens on-device with no cloud storage, user accounts, or data sharing with AI models or ad platforms. Privacy-first fitness tracking for athletes who want training readiness and recovery insights without compromising personal health data security.
The Outsiders privacy feature showing local data processing with app icon and Apple Health icon connected by arrows on iPhone. Lock icon symbolizes security. All training analysis happens on-device with no cloud storage, user accounts, or data sharing with AI models or ad platforms. Privacy-first fitness tracking for athletes who want training readiness and recovery insights without compromising personal health data security.
The Outsiders privacy feature showing local data processing with app icon and Apple Health icon connected by arrows on iPhone. Lock icon symbolizes security. All training analysis happens on-device with no cloud storage, user accounts, or data sharing with AI models or ad platforms. Privacy-first fitness tracking for athletes who want training readiness and recovery insights without compromising personal health data security.

Trusted by Athletes

Insightful and well designed

★★★★★

Nov 26, 2025 - olksij

Everyone in fitness will find it useful. You can check metrics Apple Health would never show. The "Readiness" score is a chef's kiss! Underrated app, deserves attention!

Best and most easy to understand Fitness App for iOS!

★★★★★

Nov 21, 2025 - Ncklg

I have been using many different apps over the years (Whoop, Athlytic, Bevel). But this one beats all of them in terms in making all the data points and readings you get easy to understand and actionable. 100% recommend to try this out, especially if you use an Apple Watch and are tracking both fitness activities and recovery!

Aspiring athletes, this is your app!

★★★★★

Mar 21, 2026 - NppN1

Unsurprisingly this is the best thing ever. Based on the experience of using Gentler Streak I had pretty high expectations. They were certainly met, lol. I’d never heard of training load, it’s so helpful. I can just follow the daily recommendations and see my fitness increase safely. Just awesome, as expected.

Insights to change my training

★★★★★

Mar 22, 2026 - JKP in WA

I've used some other Apps -- often it seems like they add metrics just because they can be calculated. This is more curated.

Using it I realized a mental mistake. I'm interested in VO2max as a measure of endurance. It takes time to go up so I'd track it with workouts. But this made it clear that I should really track my load a month before -- it's really my previous work that tracks with VO2max. 

The focus on training load and the ratio with which it's changing -- very helpful with dog walks. I track those differently (trying not tool rush my doggie too much.) still I can compare it to other types of workouts.

I’m loving The Outsiders!

★★★★★

Feb 7, 2026 - Mattyeahoo

This app has really focused my training. With Training Load, Focus and Readiness plus my Endurance Fitness markers I can really determine how I’m doing and how I should be training everyday. Now with customization to lay out the design as you want it is so good. Plus there are Training Goals to really keep you heading in the right direction. Everything about this app is intentional without any fluff but it is strikingly beautiful at the same time.

Excellent App

★★★★★

Mar 24, 2026 - TP.!

This app accurately lets me know how ready my body is for a workout.  If I follow its guidance I am constantly feeling good and on top of my exercise routine!

CZ

Cynthia Zhou

11 February 2026

The Outsiders!!!

To: support@gentlerstories.com

I've been a premium user of Gentler since I discovered it in 2024, and I constantly preach to my ends and teammates that it's my favourite app of all time!

I just wanted to say how excited I am for this new app! Like genuinely so stoked. I am a competitive Ultimate Frisbee player (it's amazing that Gentler has an option for Ultimate frisbee) and a massive data nerd, so this app is an absolute game changer for me.

Great work team!!

Love from New Zealand, Cynthia

Best app ever!

★★★★★

Oct 23, 2025 - Cyclingislife87

Just the app I was waiting for! It has all the advanced metrics I need to plan my workouts and analyze them to get the best results without the fear of overtraining. Amazingly designed interface, just like their other app, Gentler Streak. You can't go wrong with this team! 💪

Very useful

★★★★★

Sep 19, 2025 - hatim

Really impressed with how professional this app feels. The data feedback is super detailed, which is exactly what athletes need to track progress and improve performance. Definitely a valuable tool for serious training.

shaunkane97

Best App Ever

★★★★★

Apr 12, 2026 - Matt.H.78

This app is visually sharp and has been a massive boost for my wife and me as we get back into a routine after having our baby! The training load tracker is a lifesaver for making sure we don’t overdo it, and seeing our long-term trends move in the right direction is incredibly motivating. It’s the perfect tool for staying consistent and tracking our progress with clear, informative stats!

Insightful and well designed

★★★★★

Nov 26, 2025 - olksij

Everyone in fitness will find it useful. You can check metrics Apple Health would never show. The "Readiness" score is a chef's kiss! Underrated app, deserves attention!

Very useful

★★★★★

Sep 19, 2025 - hatim

Really impressed with how professional this app feels. The data feedback is super detailed, which is exactly what athletes need to track progress and improve performance. Definitely a valuable tool for serious training.

Best and most easy to understand Fitness App for iOS!

★★★★★

Nov 21, 2025 - Ncklg

I have been using many different apps over the years (Whoop, Athlytic, Bevel). But this one beats all of them in terms in making all the data points and readings you get easy to understand and actionable. 100% recommend to try this out, especially if you use an Apple Watch and are tracking both fitness activities and recovery!

CZ

Cynthia Zhou

11 February 2026

The Outsiders!!!

To: support@gentlerstories.com

I've been a premium user of Gentler since I discovered it in 2024, and I constantly preach to my ends and teammates that it's my favourite app of all time!

I just wanted to say how excited I am for this new app! Like genuinely so stoked. I am a competitive Ultimate Frisbee player (it's amazing that Gentler has an option for Ultimate frisbee) and a massive data nerd, so this app is an absolute game changer for me.

Great work team!!

Love from New Zealand, Cynthia

Best app ever!

★★★★★

Oct 23, 2025 - Cyclingislife87

Just the app I was waiting for! It has all the advanced metrics I need to plan my workouts and analyze them to get the best results without the fear of overtraining. Amazingly designed interface, just like their other app, Gentler Streak. You can't go wrong with this team! 💪

Insights to change my training

★★★★★

Mar 22, 2026 - JKP in WA

I've used some other Apps -- often it seems like they add metrics just because they can be calculated. This is more curated.

Using it I realized a mental mistake. I'm interested in VO2max as a measure of endurance. It takes time to go up so I'd track it with workouts. But this made it clear that I should really track my load a month before -- it's really my previous work that tracks with VO2max. 

The focus on training load and the ratio with which it's changing -- very helpful with dog walks. I track those differently (trying not tool rush my doggie too much.) still I can compare it to other types of workouts.

I’m loving The Outsiders!

★★★★★

Feb 7, 2026 - Mattyeahoo

This app has really focused my training. With Training Load, Focus and Readiness plus my Endurance Fitness markers I can really determine how I’m doing and how I should be training everyday. Now with customization to lay out the design as you want it is so good. Plus there are Training Goals to really keep you heading in the right direction. Everything about this app is intentional without any fluff but it is strikingly beautiful at the same time.

Excellent App

★★★★★

Mar 24, 2026 - TP.!

This app accurately lets me know how ready my body is for a workout.  If I follow its guidance I am constantly feeling good and on top of my exercise routine!

shaunkane97

Aspiring athletes, this is your app!

★★★★★

Mar 21, 2026 - NppN1

Unsurprisingly this is the best thing ever. Based on the experience of using Gentler Streak I had pretty high expectations. They were certainly met, lol. I’d never heard of training load, it’s so helpful. I can just follow the daily recommendations and see my fitness increase safely. Just awesome, as expected.

Best App Ever

★★★★★

Apr 12, 2026 - Matt.H.78

This app is visually sharp and has been a massive boost for my wife and me as we get back into a routine after having our baby! The training load tracker is a lifesaver for making sure we don’t overdo it, and seeing our long-term trends move in the right direction is incredibly motivating. It’s the perfect tool for staying consistent and tracking our progress with clear, informative stats!

Insightful and well designed

★★★★★

Nov 26, 2025 - olksij

Everyone in fitness will find it useful. You can check metrics Apple Health would never show. The "Readiness" score is a chef's kiss! Underrated app, deserves attention!

I’m loving The Outsiders!

★★★★★

Feb 7, 2026 - Mattyeahoo

This app has really focused my training. With Training Load, Focus and Readiness plus my Endurance Fitness markers I can really determine how I’m doing and how I should be training everyday. Now with customization to lay out the design as you want it is so good. Plus there are Training Goals to really keep you heading in the right direction. Everything about this app is intentional without any fluff but it is strikingly beautiful at the same time.

Very useful

★★★★★

Sep 19, 2025 - hatim

Really impressed with how professional this app feels. The data feedback is super detailed, which is exactly what athletes need to track progress and improve performance. Definitely a valuable tool for serious training.

Best and most easy to understand Fitness App for iOS!

★★★★★

Nov 21, 2025 - Ncklg

I have been using many different apps over the years (Whoop, Athlytic, Bevel). But this one beats all of them in terms in making all the data points and readings you get easy to understand and actionable. 100% recommend to try this out, especially if you use an Apple Watch and are tracking both fitness activities and recovery!

Excellent App

★★★★★

Mar 24, 2026 - TP.!

This app accurately lets me know how ready my body is for a workout.  If I follow its guidance I am constantly feeling good and on top of my exercise routine!

shaunkane97

Aspiring athletes, this is your app!

★★★★★

Mar 21, 2026 - NppN1

Unsurprisingly this is the best thing ever. Based on the experience of using Gentler Streak I had pretty high expectations. They were certainly met, lol. I’d never heard of training load, it’s so helpful. I can just follow the daily recommendations and see my fitness increase safely. Just awesome, as expected.

CZ

Cynthia Zhou

11 February 2026

The Outsiders!!!

To: support@gentlerstories.com

I've been a premium user of Gentler since I discovered it in 2024, and I constantly preach to my ends and teammates that it's my favourite app of all time!

I just wanted to say how excited I am for this new app! Like genuinely so stoked. I am a competitive Ultimate Frisbee player (it's amazing that Gentler has an option for Ultimate frisbee) and a massive data nerd, so this app is an absolute game changer for me.

Great work team!!

Love from New Zealand, Cynthia

Best App Ever

★★★★★

Apr 12, 2026 - Matt.H.78

This app is visually sharp and has been a massive boost for my wife and me as we get back into a routine after having our baby! The training load tracker is a lifesaver for making sure we don’t overdo it, and seeing our long-term trends move in the right direction is incredibly motivating. It’s the perfect tool for staying consistent and tracking our progress with clear, informative stats!

Insights to change my training

★★★★★

Mar 22, 2026 - JKP in WA

I've used some other Apps -- often it seems like they add metrics just because they can be calculated. This is more curated.

Using it I realized a mental mistake. I'm interested in VO2max as a measure of endurance. It takes time to go up so I'd track it with workouts. But this made it clear that I should really track my load a month before -- it's really my previous work that tracks with VO2max. 

The focus on training load and the ratio with which it's changing -- very helpful with dog walks. I track those differently (trying not tool rush my doggie too much.) still I can compare it to other types of workouts.

Best app ever!

★★★★★

Oct 23, 2025 - Cyclingislife87

Just the app I was waiting for! It has all the advanced metrics I need to plan my workouts and analyze them to get the best results without the fear of overtraining. Amazingly designed interface, just like their other app, Gentler Streak. You can't go wrong with this team! 💪

The Outsiders app icon for training readiness tracking on iPhone and Apple Watch

Go outside and put in the work.

Go outside and put in the work.

When you're back, The Outsiders will be ready with the full picture.

But first👇