Set your intervals with Round Timer: HIIT & Tabata. Choose Classic Tabata, Beginner HIIT, EMOM 10, AMRAP 20, Boxing rounds or Sprint intervals, then check your settings before starting.
Build a workout with work and rest seconds, rounds, 1–10 sets, preparation and cooldown. Add exercise names for each round. The full screen timer shows your current phase, remaining time and round count.
Choose tones, voice cues and phase vibrations. Speech voices depend on your device. Android includes a foreground audio timer service, notification controls, a home screen widget and a Quick Settings tile. Pause, resume or skip as needed. Finished and stopped sessions appear in local history, with sharing and deletion controls.
Non-personalized banners appear only on idle Quick start, Workouts, History and Settings screens. Interstitial ads may appear after you tap Done following a workout, subject to a cooldown. Ads never appear during running or paused timers. Consent choices are collected before ads load; non-personalized ads still involve data collection.
Check app availability and timer information at https://tabatatimeronline.com.
Google Play includes banner, cold-start app-open, optional rewarded and after-workout interstitial ads. No ads during running or paused workouts. Build 1–10 sets per workout; custom work, rest and rounds.
Six interval presets, custom rounds, voice cues and local workout history.