Intervally - Interval Timer - Sport & Health
ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.
Norwegian 4x4 Protocol - Download the Norwegian 4x4 App for scientifically-proven HIIT workouts. Transform your fitness with structured interval training. Available on iOS and Android.
DS Clock - Keep your time synchronized with Atomic Time servers, using customizable digital desktop clock with westminster chimes.
Love HIIT - Free exercise timer, share your workouts
LClock - Longhorn systray clock program