TRAINER WATCH vs Swimming Timer
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。
Swimming Timer
This app helps swimmers practice race starts with customizable timers and randomized delays. It also functions as a stopwatch to accurately measure lap and split times during training. Results can be saved and organized by date, with customizable event names and color themes.
- Customizable race start timer
- Randomized start delays
- Lap and split time measurement
- Save and view results by date
- Editable event names
- Customizable color themes
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Starter & stopwatch app for swimming. It can be used for practicing the starting race command or to help you measure your time. ●Basic Functions 1. Starter function You can set the time from TAKE YOUR MARKS to start sound as you like. It is also possible to randomize the time, which is useful for practicing the start. 2. Lap time & Split time Pressing the "Lap" button or "Stop" button after the start sound, the lap time and split time will be measured. If you accidentally press the button to measure a time, you can delete it by swiping the result cell to the left. 3. Saving results Measured times can be saved by pressing the "Save" button. Saved times can be viewed by date. 4. Event setting By tapping the event name under the time, you can freely select an event (e.g. Men's 100m Freestyle). In the initial display, 100m is set. 5. Color settings The background color and timer color can be changed.
Screenshots
Verdict
The clearest difference is in-app purchases: TRAINER WATCH at none against Swimming Timer's 2. TRAINER WATCH also leads on update cadence (every 2 weeks vs every 3 months). On price, ads, device support and iOS requirement 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. Swimming Timer sells 2 one-off in-app purchases. TRAINER WATCH asks for nothing beyond the download.
TRAINER WATCH ships an update every 2 weeks, Swimming Timer every 3 months. The most recent releases landed on March 4, 2026 and September 25, 2026 respectively.
| Parameter | TRAINER WATCH | Swimming Timer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 34 MB |
| Age rating | 4+ | 17+ |
| Developer | Kohei Karita | NAOYA ONO |
In-app purchases
TRAINER WATCH
No in-app purchases
Swimming Timer
- Support Developer$0.99
- Remove ads$6.99
