Trainbell
LiveHIIT & Tabata interval timer. No subscription, no account, no ads mid-workout.
The interval timer that stays out of your way.
Trainbell is a distraction-free interval timer for HIIT, Tabata, boxing rounds, EMOMs, circuits, and other interval-based workouts, with no ads, accounts, subscriptions, or network tracking. Its simple setup lets you start a workout in seconds by entering prep, work, rest, and rounds, while advanced options remain hidden until you need them. The timer keeps running accurately with the screen off, survives app interruptions, and offers customizable audio, voice, vibration, and visual cues that work seamlessly alongside your music or podcasts. All presets and data stay on your device, giving you full control and privacy without relying on cloud services.
- - Prep, work, rest, rounds, sets, rest between sets, cool-down
- - Full-screen phase colours, tap to pause, skip forward and back, add ten seconds
- - Runs with the screen off, with lock-screen controls
- - Beeps with a 3-2-1 countdown and a half-way cue
- - Vibration-only and screen-flash modes
- - Separate cue volume and Bluetooth cue delay
- - Five saved presets, and export or import them to a file whenever you like
- - Dark theme, and a colour theme that follows your system setting