Relay: Interval & HIIT Timer

Relay is an interval timer from Moonlet Labs for workouts, study sessions and anything else that runs in rounds. Ready-made sessions Four built-in sessions get you started: Tabata (20 seconds of work and 10 of rest, 8 rounds), HIIT (45 seconds on and 15 off, 10 rounds), EMOM (every minute on the minute, 10 rounds) and Pomodoro (25 minutes of focus and 5 of break, four times, with a 15-minute long break at the end). Build your own Set up your own interval timer with work and rest times, the number of rounds (up to 99) and an optional warm-up and cool-down, then save it as a session, or start from a copy of any built-in one. The same builder makes a round timer for boxing, martial arts or circuit training: for example, 3-minute rounds with a minute of rest. Readable across the room While a session runs, the countdown fills the screen and the whole screen changes colour with each phase, so you can tell work from rest at a glance from a couple of metres away. The screen stays on, and the pause, skip, restart and end buttons are large enough to hit mid-workout. On the session screen, the volume keys pause and resume. Sound, voice and vibration Hear beeps at 3, 2, 1 before each phase ends, a distinct tone at every phase change, and hear the phase called out, such as Work, Rest or Last round, through your phone's text-to-speech. Choose sound and vibration, sound only or vibration only, and switch spoken cues off in Settings. Keeps time in the background Relay keeps counting with the screen off or while you use another app, and a notification shows the time left with pause, skip and end buttons. After the session See your total time and rounds completed, then run it again. History keeps the date, session and total time of each session you finish, and you can clear it at any time. A home screen widget lists your recent sessions and starts one with a tap. Privacy: no account needed. All timing features work offline. The app is ad-supported: ads are served by Google AdMob, which may use the advertising ID. Moonlet Labs collects crash reports and usage analytics through Google Firebase, linked to pseudonymous app identifiers rather than your name or email. Where the law requires it, the app asks for your consent first, and privacy choices are in Settings. Privacy policy: moonletlabs.com/privacy.html