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 agoFirst 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.