CARDIA – Heart Rate HIIT Timer
Masataka Sato Health & Fitness iPhoneiPadiPod touch
CARDIA – Heart Rate HIIT Timer is a free Health & Fitness app for iPhone and iPad by Masataka Sato. Requires iOS 15.0. Updated July 22, 2026.
- Price
- Free
- on the App Store
- Size
- 35 MB
- Age 4+
- Updated
- Jul 22
- 2026 · v1.0.7
Screenshots
About CARDIA – Heart Rate HIIT Timer
HIIT with Polar is a fitness app that uses heart rate sensors such as Polar H10 to let you check your heart rate in real time during HIIT workouts. During high-intensity exercises such as burpees, you can monitor your current heart rate and workout intensity, making it easier to train at an intensity that suits you. Main Features ・Connects with supported heart rate sensors such as Polar H10 ・Displays your heart rate in real time Recommended for people who want to move their body efficiently in a short amount of time, or who want to manage workout intensity while checking their heart rate. ※ This app is not an official Polar app. It is a HIIT support app compatible with Polar H10. ※ This app is not intended for medical use. The heart rate data displayed in this app should be used as reference information for health management and fitness purposes only.
What’s new
Version 1.0.7 · Updated July 22, 2026
・Implemented Firebase Analytics
App privacy
The developer, Masataka Sato, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to CARDIA – Heart Rate HIIT Timer
Looking for apps like CARDIA – Heart Rate HIIT Timer? Here are 6 similar apps on the App Store. The highest rated is Propeller Fit (5.0/5), and 5 of the 6 are free to download.
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Skillhouette
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Ztill — 3-Minute Journal
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Falcon MMA Academy
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HIIT Workout Timer: Tabata
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Propeller Fit
5.0
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Gymly: fitness tracking
| App | Rating | Price | Last updated |
|---|---|---|---|
| CARDIA – Heart Rate HIIT Timer | – | Free | July 22, 2026 |
| Skillhouette | – | 2.99 USD | Sep 8, 2026 |
| Ztill — 3-Minute Journal | – | Free | Jul 31, 2026 |
| Falcon MMA Academy | – | Free | Jul 20, 2026 |
| HIIT Workout Timer: Tabata | – | Free | Aug 15, 2026 |
| Propeller Fit | 5.0 / 5 (1) | Free | Feb 24, 2025 |
| Gymly: fitness tracking | – | Free | Sep 9, 2026 |