ジムキット - 筋トレ・インターバルタイマー

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Everyone
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Everyone
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About this app

GymKit is a simple and intuitive workout timer and tool app ideal for strength training, HIIT (High-Intensity Interval Training), Tabata training, cardio, stretching, and more.

It features a user-friendly design that is easy to see and operate, and prioritizes comfort to ensure you can stay focused during your workout.

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🔥 Main Features and Characteristics
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■ Large, Easy-to-Understand Countdown Display
- The screen color changes significantly according to your status (Work or Rest).
- The remaining time and current set count (e.g., 3/8 sets) are clearly visible even from a distance.

■ Flexible Menu (Preset) Management
- Save your preferred timer settings (work time, rest time, number of sets, etc.) with customizable names. * Includes practical presets such as "Tabata (20 seconds/10 seconds x 8)," "HIIT," and "3-minute rounds" as standard.

* Supports "pinning" (fixing to favorites) of frequently used timers and automatic sorting of recently used timers.

* Step Name Customization
* Allows you to set custom names for each step, such as "Bench Press," "Squat," and "Sprint."
* Allows for quick input with a single tap from the quick selection dialog.

* Sound & Vibration Notifications
* Allows you to concentrate on your training without looking at the screen with a transition sound and a countdown sound 3 seconds before the end.
* Supports vibration functionality for safe use in environments where sound cannot be played, such as gyms and public spaces.

* Background Measurement & Lock Screen Operation
* The timer continues to operate accurately even when the app is closed or the screen is locked.
* Allows you to check the remaining time and perform operations such as pausing and resuming from the lock screen or notification area.

■ Screen Sleep Prevention (Always On)
- Prevent the screen from automatically turning off during training by switching to always-on mode with a single tap.

■ Privacy-Focused & Ad-Free
- No account registration or login required.
- Operates entirely locally; no personal information is collected or transmitted externally.

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💪 Recommended for these types of training
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- Strength training / Weight training (interval management)
- HIIT (High-Intensity Interval Training)
- Tabata Training (Tabata Workout)
- Boxing / Mixed Martial Arts Round Timer
- Running / Interval Running
- Yoga / Stretching / Core Training (Plank, etc.)

Make your daily workouts smarter with "GymKit," which powerfully supports your gym training!
For strength training, HIIT, and Tabata! An intuitive timer and tool to support your gym workouts.
Updated on
Oct 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
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  • Committed to follow the Play Families Policy

What’s new

【v1.2.2 アップデート内容】
・テンポ(メトロノーム)機能が画面消灯(スリープ)や他アプリ操作中も安定して動作するよう改善しました。通知バーからテンポの確認や停止も行えます。
・タイマー機能とテンポ機能が同時に動いて音が重ならないよう、一方を開始するともう一方が自動で停止/一時停止する排他制御を導入しました。
・内部処理やCI/CDパイプラインを最適化し、アプリの動作安定性を向上させました。
Content rating
Everyone
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About the developer
朝原 孝文
asabon.t@gmail.com
木曽西3丁目8-27 町田市, 東京都 194-0037 Japan