It depends on your own preferences and foundation. The fitness course in keep will require higher physical fitness and be more difficult. Only for the fitness crowd, the function is single, but it will be more professional. Feel belongs to comprehensive sports health, and the video tutorial inside is relatively simple, suitable for the public, and the effect is not bad, and it is not limited to fitness. Functions such as diet, calorie calculation, drinking water and heart rate measurement can help you understand all aspects of your health. Fittime is a niche application. There are not many user groups, and the function of the product will be slightly weak. Without its own outstanding characteristics, it is difficult for new users to integrate.