TRAINER WATCH vs Sprint Start Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TRAINER WATCH
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陸上競技部のマネージャーの要望をヒアリングし、現場で使いやすいようにカスタマイズしています。 紙に記録を書く必要はありません。 蓄積したデータはチームメンバー間で共有可能となり、データ登録後すぐに確認することが可能です。 効率よくチームメンバーのタイムを管理することで、スポーツにおけるデータ活用を加速させます。 ■対応スポーツ ・本アプリは陸上競技での使用を想定して開発しておりますが、水泳やその他スポーツのランニングトレーニングにおいても利用可能です。 ・ストップウォッチで計測したタイムをリアルタイムでアスリートごとに割り当てることができるので、スポーツチームでの幅広い活用ができます。
Sprint Start Trainer
This app provides tools for solo athletic training, offering customizable interval settings for voice cues like "on your marks," "set," and a pistol sound. It features random timing starts with detailed configuration options to simulate various race scenarios.
- Customizable interval settings
- Voice cues (on your marks, set, pistol)
- Random timing start
- Detailed timing configuration
- Simulates various race scenarios
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Practice track sprint and swimming starts with just one phone. Starter Kit is a start-training app for sprinters, swimmers, and coaches. It does more than play start signals: it lets you measure reaction time on video and review start technique. In Timing and Random modes, each video frame displays the time relative to the moment the start sound plays, with that moment set to zero. Read the displayed time on the frame where the athlete first moves to measure reaction time, then review technique in the same video. With fixed or randomized signal intervals, you can practice track block starts and swimming dive starts on your own or with a team. WHO IS IT FOR? • 100 m and 200 m sprinters • Track athletes who want to practice block starts • Swimmers who want to practice dive starts and improve their response to the start signal • Track-and-field coaches and swimming coaches running start drills • Athletes who want to improve reaction time and start technique KEY FEATURES ■ Video reaction-time measurement and technique review In Timing and Random modes, Starter Kit adds a timer to every video frame, using the start signal as zero. Read the value displayed on the frame showing the athlete's first visible movement to measure reaction time and review start technique. Videos can be saved to Photos, and recording can continue for up to 90 seconds after the start sound finishes. With up to 90 seconds of recording, you can also use the on-video timer to measure an accurate start-to-finish time. ■ Three start signal sounds Choose a pistol sound, swimming start beep, or electronic start sound to match your sport or training session. The swimming beep makes Starter Kit useful for swimming start practice as well as track sprint starts. ■ Timing mode: fixed intervals Set the timing between “On your marks,” “Set,” and the start signal. Repeat the same start sequence for individual or team practice. ■ Random mode: randomized intervals Randomize the intervals between “On your marks,” “Set,” and the start signal. The timing varies within your chosen range so athletes can practice reacting without anticipating the signal. ■ Manual mode: individual cues Play “On your marks,” “Set,” and the start signal separately. Use it for coach-led or group drills, or play the swimming start beep on its own at the pool. ■ Automatic repeat starts In Timing and Random modes, run start sequences repeatedly at an adjustable interval for efficient practice sets. Starter Kit turns your phone into a portable start-training tool for the track or poolside—no dedicated starting system required. Automatic repeat starts and custom recording durations require an upgrade.
Screenshots
Verdict
The clearest difference is in-app purchases: TRAINER WATCH at none against Sprint Start Trainer's 1. TRAINER WATCH also leads on iOS requirement (14.2 vs 18.0). On price, update cadence, ads 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
Both are free to download. Sprint Start Trainer sells 1 one-off in-app purchase. TRAINER WATCH asks for nothing beyond the download.
TRAINER WATCH ships an update every 2 weeks, Sprint Start Trainer every 3 weeks. The most recent releases landed on September 29, 2026 and October 14, 2026 respectively.
| Parameter | TRAINER WATCH | Sprint Start Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (15 ratings) — better |
| Positive reviews | — | 90.0% of reviews |
| Number of ratings | — | 15 — better |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 14.2 — better | 18.0 |
| Further details — not scored | ||
| Size | 16 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Kohei Karita | Koki Osada |
In-app purchases
TRAINER WATCH
No in-app purchases
Sprint Start Trainer
- Remove Ads$4.99
Questions
Is TRAINER WATCH free?
Is Sprint Start Trainer free?
Do TRAINER WATCH or Sprint Start Trainer have ads?
Which is updated more often, TRAINER WATCH or Sprint Start Trainer?
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