BOX CLOCKHow to use
BOX CLOCK has two tabs: Workout and Settings. Pick a format and a time on the Workout tab and you're ready to go. Everything you set is remembered on your phone for next time.
Choose a format and set the time
- On the Workout tab, pick FOR TIME, TABATA, EMOM or AMRAP. Tap the ? next to a format for an example, or open The four workout formats on the Settings tab for the full explanation.
- Under Time, use − and + or tap a number to type it in. Presets apply a common setup in one tap, such as the classic TABATA 20/10 × 8.
- Under Get ready, choose how many seconds to count down before you start, or None.
- Tap Start workout. If the media volume is low, power saving is on, the screen can't stay on or the battery is low, Before you start appears first. Tap Go back to fix it, or Start anyway.
The timer screen
- The timer starts as soon as the screen opens, beginning with the get-ready countdown. The background color follows the segment (get ready, work, rest), and the screen shows the current round, the total time left and the current time.
- A boxing bell marks the countdown, the start, rest, 10 seconds left and the finish. The screen stays on during the countdown and the workout.
- Tap Pause to pause and Resume to carry on. Reset goes back to the beginning; tap Start to time again.
- In FOR TIME, tap Done when you finish and the time on screen is your score. It also ends on its own at the time cap.
- When the workout ends you'll see your result, with Share, Restart and End.
Automatic pause when you leave
- If you switch to another app or lock the screen during a workout, BOX CLOCK pauses. It doesn't keep timing in the background.
- When you come back you'll see Paused automatically. Tap Resume to carry on, or Later to stay paused.
- Your progress survives the app being closed, crashing or the phone shutting down: reopen it and you're back at the last saved pause point, within 1 second.
- On iPhone, pulling down Control Center to adjust the volume, or an incoming call banner, only saves your progress. It doesn't pause.
Settings
Sound cues
Turn sound off, or use − and + to set the volume (20%–100%; 50% matches your device volume), then tap Test to hear it. Cues play even in silent mode. Your music keeps playing and is only lowered briefly for each cue.
Vibration
Turn vibration off, or choose when to vibrate: workout start, each round start, rest, 10 seconds left, final countdown and workout end. By default it only vibrates at the start and end of a workout. Tap Test to feel it. This section is hidden on devices that can't vibrate.
Language
Follows your device by default, or set it to 繁體中文, 简体中文 or English. On iPhone, the app name and permission prompts switch to the chosen language the next time you open the app.
About
The four workout formats, this guide, the privacy policy and open-source licenses.