Real working APP for 1 minute interval running trainigs! Intervals supposed to be run as following - One minute intensive running, One minute revovery running. Push LAP Button after each full cycle (1x intensive, 1x recovery, LAP button). What you see on the screen: If positive Seconds - Run Intensively remaining seconds. If negative Seconds - Recover untill - 60 Sec, and press LAP!! Happy trainings!