TTRIstress app for iPhone and iPad

4.4 ( 3664 ratings )

Health & Fitness
Developer: Hsu Po-Chun

Free

Current version: 1.71, last update: 4 years ago
First release : 19 Sep 2019
App size: 10.48 Mb

To connect the Bluetooth device with Heart rate detector, and to show the heart rate and RRI in real-time, with the speed of heart rate, the stress level will also be shown.