Round Zero: HIIT Interval

Round Zero is a fast, focused interval timer for HIIT, Tabata, EMOM, circuit training and boxing rounds. Buy it once. No ads, no subscription, no account. Ever. BUILT FOR REAL TRAINING Most free timers interrupt your session with a video ad between rounds. Round Zero never will. You pay once and the app is yours. EVERYTHING YOU NEED • Custom work and rest intervals, from 5 seconds to 10 minutes • Up to 100 rounds per session • Multi-cycle support with rest between cycles • Optional warm-up and cooldown phases • Five ready-to-use presets: Tabata, HIIT 30/30, EMOM 10, Boxing Rounds, Core Circuit STAY IN THE ZONE • Clear countdown with audio cues on the final three seconds • Haptic feedback on every phase change • Cues play over your music without pausing it • Keeps running when your screen is locked • Screen stays awake during a session TRACK YOUR PROGRESS • Every session saved…