Kiiro vs Training Loader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kiiro
This app helps runners understand their training by analyzing data like training load, heart rate zones, and progress. It provides clear insights and warnings to prevent overtraining and ensure effective workouts.
- Training load analysis
- Heart rate zone tracking
- Progress visualization
- VO2 max trends
- Automatic route matching
- Personal records
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Build an adaptive running plan around your life—and bring every workout to Apple Watch. Kiiro combines flexible training plans, run tracking, and detailed Apple Watch data in one place. AN ADAPTIVE RUNNING PLAN Tell Kiiro about your running experience, available days, weekly training time, and preferred long-run days. Kiiro builds a plan around your schedule and keeps the weeks ahead aligned with the training you actually complete. • Easy runs, long runs, intervals, warmups, and cooldowns • Duration and heart-rate targets for structured sessions • A choice of progression styles, from patient to ambitious • Plan alignment and training-load guidance after every run MADE FOR APPLE WATCH RUNNERS Send scheduled runs to the Workout app on Apple Watch and follow each structured session from your wrist. Record your workout as usual, then let Kiiro sync and analyze the result. • Keep upcoming workouts on Apple Watch • Compare your completed run with the planned target • Automatically connect recorded runs to your training plan • See your schedule, workout details, and progress on iPhone FLEXIBLE WHEN LIFE CHANGES Missed a day or need to move a run? Reschedule the current or next week and Kiiro rebuilds it around the days that still work. Change your availability, weekly time, frequency, long-run preference, or progression style whenever your routine changes. DETAILED RUN TRACKING AND ANALYSIS Go beyond a basic distance tracker. Kiiro turns Apple Watch workout data into a clear picture of each run and your longer-term progress. • Explore route maps, splits, pace, distance, duration, elevation, and energy • Review heart rate, zones, cadence, power, stride length, vertical oscillation, and ground contact time when recorded • Move between summary, performance, and history views for each workout • Compare every attempt on the same route to see where you improved • Edit workout details or merge sessions when a workout was recorded in separate parts UNDERSTAND YOUR TRAINING OVER TIME Kiiro brings individual workouts and long-term trends together, so your Apple Watch data becomes useful guidance instead of a collection of numbers. • Training Load shows your recent effort and short-term fatigue • Fitness Level follows the longer-term training base you are building • Load Balance helps show whether you are fresh, building, balanced, fatigued, or pushing too hard • Running Score lets you compare performance across intervals, long runs, and recovery runs • Follow VO₂ Max, HRV, resting heart rate, walking heart rate, and cardio recovery trends • Discover personal bests and milestones such as your fastest efforts, longest run, longest streak, biggest week, and biggest month SET GOALS AND STAY CONSISTENT Create weekly, monthly, or yearly goals for workout count, distance, training time, calories, or elevation. Follow your progress and see whether you are ahead, on track, or behind. ONE CONNECTED TRAINING LOOP Plan on iPhone. Train with Apple Watch. Review your run in Kiiro. Use what you actually completed to guide what comes next. Kiiro is designed for runners who want the convenience of Apple Watch with more structure, more useful data, and a plan that fits real life. Some features require a Kiiro Pro subscription. Available metrics depend on the data recorded by your devices and the permissions you choose to share through the Health app. Terms of Use: https://kiiro.app/terms Privacy Policy: https://kiiro.app/privacy
Training Loader
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I love the "Training Load" feature of Apple Fitness, but it is dependent upon effort scoring, which I consistently forget to do. Especially when my workouts are flowing in from other fitness sources like Peloton, Oura, Slopes, Strava, etc. So, I developed Training Loader to fill that gap... After calibrating the model against recent workouts, Training Loader automatically sets the workout effort score for you, in the background, based on caloric burn and average heart rate. You can also quickly override the score for any workout Training Loader sets for you. I hope you find it useful!
Screenshots
Verdict
The clearest difference is price: Kiiro at Free against Training Loader's $0.99. Kiiro also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (18.0 vs 26.0). On ads, in-app purchases and device support 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
Kiiro is free to download; Training Loader costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Kiiro ships an update fortnightly, Training Loader every 2 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.
| Parameter | Kiiro | Training Loader |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 55 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | endurance101 OÜ | Ryan Pardue |
In-app purchases
Kiiro
No in-app purchases
Training Loader
No in-app purchases
Questions
Is Kiiro free?
Is Training Loader free?
Do Kiiro or Training Loader have ads?
Which is updated more often, Kiiro or Training Loader?
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