
CARDIA – Heart Rate HIIT Timer
Heart Rate-Based HIIT Timer
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Free
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About
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.
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What's New in CARDIA
1.0.7
July 22, 2026
・Implemented Firebase Analytics




