the purpose Set up and record training interval times. Also, save the record and edit it with other apps. Other You can edit in other apps, save to email and file sharing apps. An app for people who want to manage interval time. How to use First, set the interval time. It can be changed later. 1, Start the timer when the training set is over. 2. The time when the start button is pressed is recorded. 3, sound and vibration occur when the timer becomes "0". Switch the screen to "text" and save to file 5, edit in other apps To be careful Ios returns the timer to 0 when returning to home.