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Screenshots

  • CARDIA – Heart Rate HIIT Timer screenshot 1
  • CARDIA – Heart Rate HIIT Timer screenshot 2
  • CARDIA – Heart Rate HIIT Timer screenshot 3
  • CARDIA – Heart Rate HIIT Timer screenshot 4

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.

CARDIA – Heart Rate HIIT Timer vs. alternatives
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