Comparison

Run Trainer vs kaizen | Adaptive Run Training

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Run Trainer

This app serves as a personal running coach and GPS tracker, offering guided training plans for various distances from Couch to 5K to half marathons. It provides audio coaching, detailed performance statistics, and seamless integration with Apple devices.

Highlights
  • Personalized training plans (Couch to 5K, 10K, Half Marathon)
  • Customizable training schedules (MyPlan)
  • Audio coaching with voice cues
  • Integrated music control
  • Free Run mode for untracked runs
  • Accurate GPS tracking with Apple Maps
  • Detailed performance statistics (SpeedMap, pace overview)
  • Apple Watch app for hands-free training
Features
Read full description

Get ready to hit your running goals, maybe even smash them, with Run Trainer, your personal running coach and GPS run tracker. Whether you’re a beginner dreaming of your first 5K with Start to Run (Couch to 5K) or an experienced runner training for a faster 10K or half marathon, our iOS app with Apple Watch support is built to guide you every step of the way. Improve your health, lose weight or simply stay in top shape with our built-in training plans, or build your own in minutes. Why runners choose Run Trainer Personalized training plans for every level - From Couch to 5K for absolute beginners to advanced plans for 10K, 15K and even a half marathon. - With MyPlan, you can easily create custom training schedules, perfect for recovery blocks or specific goals. - Our plans use a clear, effective 3-step approach: Walk, Jog, Run. Smart training with audio coaching - Get clear voice cues during every workout to guide your pace and structure so you stay on rhythm and motivated. - Enjoy your own music from Apple Music, Spotify, Podcasts or other apps. Run Trainer automatically lowers the volume for instructions so you stay focused. - Prefer running freely with tracking? Free Run lets you head out without a plan while still tracking your performance. Accurate GPS tracking & detailed stats - Record your route with live GPS using Apple Maps. - See distance, time, pace and calories at a glance. During and after your run. - Dig into performance details with the unique SpeedMap, showing exactly where you sped up or slowed down and where you can optimize your pace for better results. - Review a clear pace overview (min/km) across all your workouts to monitor progress and set targets. Seamless with your Apple devices - Leave your iPhone in your pocket or in the holder. The Apple Watch app shows live running data on your wrist so you can train hands-free. - Sync your training data effortlessly with our free cloud service and Apple Health for a complete view of your fitness and health metrics. Your progress, always within reach - Your stats sync automatically with your free account. - Never worry about losing progress. Log in and pick up where you left off, even on a new phone or after reinstalling the app. Run Trainer: by runners, for runners We believe in simplicity and effectiveness. Run Trainer is built by runners for runners, delivering an intuitive, motivating coaching experience. See why so many runners have appreciated its clarity and functionality for over 10 years. Try Run Trainer risk-free today. Enjoy a generous free period with access to all features, without automatic subscription renewal. Explore everything first, then decide if you want to become a member. Start your running journey now, improve your fitness and discover your full potential! Note: Continued use of GPS running in the background can dramatically decrease battery life.

About

kaizen | Adaptive Run Training

This app uses your running history to calculate your current fitness and set dynamic weekly distance targets. It offers personalized training guidance to help you achieve your running goals, whether for a specific race or general improvement. The app provides race predictions and flexible training plans that adapt to your schedule.

Highlights
  • Data-driven training partner
  • Dynamic weekly distance targets
  • Personalized fitness calculations
  • Race predictions for various distances
  • Flexible training plans
  • Build consistency and improve fitness
Features
Read full description

kaizen is load-based run training for committed runners, starting with the running you have already done. Connect Strava, Garmin or Apple Health so kaizen can analyse your training and race history. See how your fitness is developing, what shape you are in now and what your training suggests is possible. kaizen then connects that picture with your goal and timeline to map the weekly training load needed ahead. kaizen does not process or store location data. Train toward a 5K, 10K, half marathon or marathon—or set a rate of improvement without an upcoming race. CHOOSE HOW YOU TRAIN Use a suggested training structure or build the week yourself: • Even Spread for a calm, repeatable weekly rhythm • 1 Long, 1 Hard to anchor the week around one longer run and one harder effort • Build Your Own for complete control over the week Choose structured workouts, plan your runs and see how each session contributes to your weekly target. ADAPT AS YOU GO Move or edit sessions when the week changes. Every completed run recalculates both your current fitness and the training load needed ahead. HOW LOAD WORKS Equal distances do not always represent equal training. kaizen uses distance, pace and elevation—along with supported cross-training minutes—to understand the load created by different activities. This keeps the bigger picture consistent while giving you control over how the work gets done. Start with a seven-day free trial. Terms: https://runkaizen.com/terms Privacy: https://runkaizen.com/privacy

Screenshots

Run Trainer4 screens
kaizen | Adaptive Run Training4 screens

Verdict

The call

The clearest difference is monetization model: Run Trainer at free with in-app purchases against kaizen | Adaptive Run Training's subscription. Run Trainer also leads on ratings volume (198 vs 28). kaizen | Adaptive Run Training's advantage is rating (4.8 vs 4.4) and update cadence (every 10 days vs monthly). On price, review sentiment, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Run Trainer sells 3 in-app purchases, starting at $5.99 per month and kaizen | Adaptive Run Training sells 15 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

kaizen | Adaptive Run Training holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Run Trainer has 198 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 53% of Run Trainer's written reviews are positive against 58% of kaizen | Adaptive Run Training's.

UpkeepUpdate frequency

Run Trainer ships an update monthly, kaizen | Adaptive Run Training every 10 days. The most recent releases landed on September 25, 2026 and September 27, 2026 respectively.

Scorecard4 real differences · 6 level
Run Trainer versus kaizen | Adaptive Run Training: the parameters behind the verdict, then further details
ParameterRun Trainerkaizen | Adaptive Run Training
PriceFreeFree
Rating4.4 (198 ratings)4.8 (28 ratings) — better
Positive reviews52.9% of reviews58.1% of reviews — better
Number of ratings198 — better28
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17.616.4 — better
Further details — not scored
Size125 MB81 MB
Age rating4+4+
DeveloperRun Trainer B.V.Run Kaizen LTD

Customer experience

Run Trainer

All ratings198 ratings
Positive86.9%
Neutral3.0%
Negative10.1%
Written reviews121 reviews
Positive52.9%
Neutral9.1%
Negative38.0%

kaizen | Adaptive Run Training

All ratings28 ratings
Positive92.9%
Neutral0.0%
Negative7.1%
Written reviews86 reviews
Positive58.1%
Neutral14.0%
Negative27.9%

User reviews

Run Trainer

From 198 App Store ratings

What we love

  • 👍 Excellent for beginner runners
  • 🎯 Effective interval training structure
  • 🎵 Works with music in background
  • 📊 Good progress tracking and statistics
  • ⚡ Simple and easy to use interface

Room to improve

  • 🐛 Frequent app crashes and glitches
  • 🔐 Difficult to cancel subscriptions
  • 💰 Misleading free trial/freemium model
  • 📱 Login issues and authentication problems
  • 🌐 WiFi-only connectivity requirement

kaizen | Adaptive Run Training

From 28 App Store ratings

What we love

  • ✨ Adaptive and flexible training
  • 🎯 Accurate race predictions
  • 📈 Helps with improvement and progress
  • 💡 Simple and effective concept
  • 🤝 Good customer support

Room to improve

  • 🐛 Very buggy and unstable
  • 📉 Inaccurate predictions sometimes
  • 🤔 Confusing to understand and use
  • 💰 Expensive subscription fee
  • ⏳ Lacks advanced features

Bugs and requests

Run Trainer

Reported bugs

14 issues
  • App crashes mid-run and loses recording
  • Pausing workout causes progress restart
  • Login freezes and authentication failures
  • Sign-up form stuck on DOB slider
  • App won't open or keeps crashing
Show 9 more
  • Cellular connectivity not working
  • GPS not recording distance accurately
  • Voice command timing off by seconds
  • Text overlapping and display corruption
  • Music playlist won't save between runs
  • App logs out unexpectedly
  • Marathon pack programs inaccessible
  • Interface buttons showing incorrect text
  • Non-English content in settings

Requested features

10 requests
  • Apple Watch standalone functionality without phone
  • Integration with Fitbit and MyFitnessPal
  • Integration with native Fitness app
  • Weight loss tracking integration
  • Treadmill mode improvements
Show 5 more
  • More detailed feature documentation
  • Voice-only coaching option
  • Continued distance tracking after workout completion
  • Better music playlist management
  • Indoor running options

kaizen | Adaptive Run Training

Reported bugs

25 issues
  • Setup process crashes or loops
  • App crashes frequently
  • Mileage calculations are incorrect
  • Planned mileage doesn't add up correctly
  • App doesn't get past the first step
Show 20 more
  • Race prediction screen freezes
  • App doesn't work at all
  • Data imports incorrectly (mileage/pace)
  • Issues with unit conversion (miles/kilometers)
  • Subscription charge without reminder
  • Weekly targets change based on paces
  • Only shows one week ahead
  • Can't get past prediction screen
  • Stuck on loading stage
  • Imported Strava data is wonky
  • Race predictor only gives marathon distance prediction
  • Training days logged as previous day
  • Cannot control subscription
  • Inconsistent distance recommendations
  • Records disappear and reappear
  • Improve prediction section hides event selection
  • Week planning tool shows wrong paces
  • Marathon goal always defaults to 2:00:00
  • Can't consistently log in
  • App is immature and has bugs

Requested features

9 requests
  • Allow editing of runs
  • More personalization in training plans
  • Ability to start the training week on different days
  • Consider elevation in training calculations
  • Add more workout suggestions and paces
Show 4 more
  • Predict times for distances other than marathon
  • FAQ and tutorials for better understanding
  • Ability to plan runs in decimals
  • Integration with other platforms beyond Strava

In-app purchases

3 purchases

Run Trainer

Subscriptions3
  • All features per month1 Month trial$5.991 Month
  • All features per 3 months3 Months trial$15.493 Months
  • All features per month year1 Year trial$43.991 Year
15 purchases

kaizen | Adaptive Run Training

Subscriptions15
  • Subscription1 Month trial$12.991 Month
  • Subscription$12.991 Month
  • Monthly Subscription7 Days trial$14.991 Month
Show 12 more
  • Monthly Subscription14 Days trial$14.991 Month
  • Subscription$14.991 Month
  • Subscription$19.993 Months
  • Subscription$24.993 Months
  • Quarterly Subscription14 Days trial$34.993 Months
  • Quarterly Subscription7 Days trial$34.993 Months
  • Subscription$49.991 Year
  • Subscription$69.991 Year
  • Annual Subscription7 Days trial$89.991 Year
  • Annual Subscription14 Days trial$89.991 Year
  • Subscription1 Month trial$89.991 Year
  • Subscription2 Months trial$89.991 Year

Questions

Is Run Trainer free?
Run Trainer is free to download, with in-app purchases available.
Is kaizen | Adaptive Run Training free?
kaizen | Adaptive Run Training is free to download, with in-app purchases available.
Which has better reviews, Run Trainer or kaizen | Adaptive Run Training?
kaizen | Adaptive Run Training is rated higher. Run Trainer averages 4.4 out of 5 from 198 ratings, while kaizen | Adaptive Run Training averages 4.8 from 28 ratings.
Do Run Trainer or kaizen | Adaptive Run Training have ads?
Neither Run Trainer nor kaizen | Adaptive Run Training shows ads.
Which is updated more often, Run Trainer or kaizen | Adaptive Run Training?
Run Trainer ships an update monthly, and kaizen | Adaptive Run Training every 10 days. Most recently, Run Trainer was updated on September 25, 2026 and kaizen | Adaptive Run Training on September 27, 2026.

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