TRounds vs Intervo

Stop wasting time fumbling with a stopwatch. TRounds is the interval timer that serious athletes actually use — obsessively precise, brutally simple, and built to push you harder. Whether you're crushing Tabata, boxing rounds, or designing your own custom protocol, TRounds keeps you locked in. Big, color-coded countdowns. Haptic feedback on every phase change. Audio cues that fire the moment each interval switches — so your eyes stay on the work, not the screen. And when the session ends, the data tells the whole story. A 365-day heatmap shows every workout you've completed. Streak counters keep you honest. Completion rates reveal the truth. Weekly bar charts track your momentum. No cloud. No account. No excuses — everything lives on your device, private by default. --- 6 BATTLE-TESTED PRESETS --- Classic Tabata: 20s on / 10s off / 8 rounds. The original protocol that changed fitness forever. HIIT Beginner: 30s on / 30s off / 6 rounds. The perfect starting point. Fight Club: 45s on / 15s off / 10 rounds. Train like a fighter. Endurance Beast: 60s on / 20s off / 12 rounds. Build serious stamina. Quick Burn: 15s on / 5s off / 16 rounds. Fast and absolutely furious. Boxing: 3 min rounds / 1 min rest / 12 rounds. Classic gym-style training. --- BUILD YOUR OWN --- Create unlimited custom presets. Set work time (5-300s), rest time (5-60s), and rounds (1-30) exactly the way your training demands. Save them. Use them every session. --- SMART ANALYTICS --- - 365-day workout heatmap calendar - 12-week activity bar chart - Current streak and longest streak - Total sessions and total time trained - Completion rate tracking - Expandable recent session history --- BUILT DIFFERENT --- - Zero accounts. Zero cloud. Zero tracking. - All data stored on-device, permanently private. - Background audio so the timer keeps firing even when your screen locks. - Dark, distraction-free UI designed for the gym floor, not the boardroom. Download free. Train harder.

Intervo is a fast, focused interval timer for HIIT, Tabata, circuit training, boxing rounds, EMOM and stretching. Build any work/rest interval, then let Intervo run the whole session for you — hands-free. EVERYTHING IS FREE All features are unlocked at no cost: save unlimited presets, voice countdown, sound cues and color themes. No subscriptions, no in-app purchases. FULLY CUSTOMIZABLE • Set prepare, work and rest durations • Choose rounds per set and number of sets • Add a longer rest between sets • One-tap Tabata preset (20s work / 10s rest x 8) CLEAR, BIG DISPLAY • Huge color-coded countdown ring you can read across the room • Each phase has its own color: prepare, work, rest, set break • Round and set progress at a glance • A preview of what comes next AUDIO & HAPTICS • Beeps on every phase change and the final 3-second countdown • Vibration feedback • Optional spoken voice countdown (English / Japanese) • Keeps the screen awake during a workout SAVE YOUR ROUTINES Save any configuration as a named preset and start it again with one tap. Tabata, HIIT, EMOM and more are included to get you going. PRIVATE & OFFLINE Intervo generates time entirely on your device. It needs no account, no sign-in and no internet connection. Nothing about your workouts ever leaves your phone. • English and Japanese • Light and dark themes with multiple accent colors • Designed for one-handed use Whether you do quick Tabata sets at home or full HIIT circuits at the gym, Intervo keeps you moving. Download it free and start your first interval in seconds. Intervo is free and supported by ads.