This timer has many valuable features. However, unless you have an iOS device, you are limited to viewing results on the very tiny screen of the timer. If your only iOS device is an iPhone, you are limited to viewing and deleting (for example, in getting an average of 6 out of 10) on your phone screen. The small boxes on the phone screen can be very frustrating to operate. If you have a Windows computer, you are much better off using csTimer. The csTimer app is free and it is much easier to operate on a relatively large laptop or desktop screen.