Quite good, except calorie calculation not accurate
This app is quite good. I followed about 3 months and I’m fitter. It allows me to do simple yet effective workout at home without the need for equipment won’t be affected by weather. However, the calorie calculation is not accurate. I did 18 minutes workout each day but sometimes it showed very low calorie burnt. Just yesterday showed 0.16kcal. It also can’t get heart rate frequently. If you do not care about calorie burnt, it is still a very good app.