# Run Tracker - Kiiro — VO2 Max, HR Zones & Endurance > Runner's training analysis app for load, zones, and progress insights. (iPhone/iPad app by endurance101 OÜ.) - Source: https://appshunter.io/ios/app/run-tracker-kiiro/id6749277384 (this page in markdown: same URL + `.md`) - Developer: [endurance101 OÜ](https://appshunter.io/developer/1824960103) - Category: Health & Fitness, Lifestyle - Price: Free - Rating: 5.00/5 from 3 App Store ratings - Age rating: 17+ - Requires: iOS 18.0 · 41 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, European Spanish - Released: 2025-10-29 - Data updated: 2026-08-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/run-tracker-kiiro/id6749277384/reviews.md ## What is Run Tracker? Kiiro – Understand Your Training Not sure if you're training too hard — or not hard enough? Most apps show you data. Kiiro explains what it means. Whether you're building toward a goal or just trying to stay consistent without getting injured, Kiiro tracks your training load, zones, and progress — and tells you what to do about it. AM I TRAINING TOO HARD? See your training load build over time — recent effort vs. long-term fitness. Know when to push and when to rest. No sports science degree required. ‣ Acute vs. chronic training load ‣ Weekly and monthly trends ‣ Clear warnings before you overdo it AM I ACTUALLY IMPROVING? Compare every run on the same route. See your progress in pace, heart rate, and effort — proof that your training is working. ‣ Automatic route matching ‣ Personal records highlighted ‣ Visual charts show trends over time AM I IN THE RIGHT ZONES? Easy runs should be easy. Hard runs should be hard. Kiiro shows exactly how much time you spend in each zone — and whether it matches your goals. ‣ Aerobic vs. anaerobic breakdown ‣ Zone trends over weeks and months ‣ Spot polarized training gaps METRICS THAT MATTER VO2 max trends, resting heart rate, HRV, cadence, ground contact time, detailed splits and maps. GOALS & HISTORY Set targets. Track streaks. Review your full training history with trends and summaries. Syncs automatically with Apple Watch through HealthKit. No manual uploads. No extra hardware. For runners who want to understand their training — not just track it. ## Key features - Training load analysis - Heart rate zone tracking - Progress visualization - VO2 max trends - Automatic route matching - Personal records ## Frequently asked questions about Run Tracker ### Does Run Tracker have ads? No, Run Tracker is completely ad-free, allowing for an uninterrupted training analysis experience. ### What devices is Run Tracker compatible with? Run Tracker is currently supported on iPhone devices. It syncs automatically with Apple Watch through HealthKit. ### How does Run Tracker help prevent overtraining? Run Tracker analyzes your acute vs. chronic training load, showing weekly and monthly trends. It provides clear warnings before you overdo it, helping you balance effort and recovery. ### Can Run Tracker track my progress on specific routes? Yes, Run Tracker offers automatic route matching, allowing you to compare every run on the same route. It highlights personal records and uses visual charts to show trends over time. ### What kind of training zones does Run Tracker monitor? Run Tracker shows exactly how much time you spend in each heart rate zone, including aerobic vs. anaerobic breakdown. It also tracks zone trends over weeks and months to help you spot polarized training gaps. ### What metrics does Run Tracker provide? Run Tracker offers a comprehensive set of metrics including VO2 max trends, resting heart rate, HRV, cadence, ground contact time, detailed splits, and maps. ### How often is Run Tracker updated? The latest version of Run Tracker is 1.3.2, and it was last updated on May 22, 2026. This indicates a recent update and ongoing development. ### What is the age rating for Run Tracker? Run Tracker has an age rating of 17+, suggesting it contains content or features that may not be suitable for younger audiences. ## Version history (last 5 releases) ### 1.5.0 — 2026-08-20 You can now edit your workout in Workout Details and see your peak training fitness in the dashboard ### 1.4.2 — 2026-07-23 This update includes bug fixes and performance improvements ### 1.4.1 — 2026-07-02 Kiiro is now available in four additional languages: Japanese, Korean, Italian, and Brazilian Portuguese! ### 1.4.0 — 2026-06-08 This update includes bug fixes and performance improvements ### 1.3.2 — 2026-05-22 This update includes bug fixes and performance improvements. ## Apps similar to Run Tracker | App | Rating | Price | Category | | --- | --- | --- | --- | | [Norwegian Singles](https://appshunter.io/ios/app/norwegian-singles/id6759835905) | 5.0 (11) | Free | Health & Fitness | | [NSA Running](https://appshunter.io/ios/app/nsa-running/id6756863486) | — | Free | Health & Fitness | | [Rox: Chronic Illness Care](https://appshunter.io/ios/app/rox-chronic-illness-care/id6756538804) | 4.6 (10) | Free | Health & Fitness | | [Body Insights for Apple Watch](https://appshunter.io/ios/app/body-insights-for-apple-watch/id6467108273) | 4.4 (48) | Free | Health & Fitness | | [fitMetrics: Health Tracker](https://appshunter.io/ios/app/fitmetrics-health-tracker/id6463768086) | 4.6 (20) | Free | Health & Fitness | | [Pace by Athlytic](https://appshunter.io/ios/app/pace-by-athlytic/id6755126439) | 4.5 (33) | Free | Health & Fitness | ## Related topics [run tracker zone](https://appshunter.io/ios/topics/run-tracker-zone) · [kiiro](https://appshunter.io/ios/topics/kiiro) · [intvl running](https://appshunter.io/ios/topics/intvl-running) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*