Interval Timer ~ HIIT & Tabata vs Teumbak

"The timer numbers are too small to see mid-workout." "I wish I could instantly know when my rest is over." — Sound familiar? This app is an interval timer designed for strength training and HIIT, delivering your workout status intuitively through color changes. The screen turns "Burning Coral" during exercise and "Calm Indigo" during rest — so even if your phone is across the room, a single glance at the color tells you exactly what to do next. ■ Intuitive Timer Experience Through Visual Cues Reading tiny numbers when you're pushing your limits is frustrating. That's why this app features a unique color system. Color Navigation: The screen color changes dynamically for each phase — exercise, rest, and preparation. A glimpse of color at the edge of your vision keeps you informed without breaking your focus, so you can stay fully locked in on your workout. Minimal Design: Only the essential information, displayed large and clear. A clean, distraction-free UI means you can always operate it instinctively. ■ Even More Convenient with Apple Watch If you have an Apple Watch, you can control and track everything right from your wrist. Control & Check at a Glance: Start a timer on your iPhone and monitor or control it directly on your Apple Watch. Haptic Alerts: Tactile feedback (vibration) ensures you never miss a set transition — even when listening to music or working out in a noisy environment. Workout Log: Your workout history is recorded automatically. Sync records between Apple Watch and iPhone to review your past sessions anytime. ■ Total Customization Freedom Handles every scenario — HIIT, Tabata, bodyweight training, stretching, boxing, and more. Second-by-Second Settings: Fine-tune preparation, exercise, rest, sets, and cooldown to match your personal routine. Preset Save: Save your favorite workout menus and launch them with a single tap next time. Switch between multiple routines with ease. ■ Perfect For You If… You want to instantly know when to switch between exercise and rest You want to build a consistent HIIT or Tabata training habit You want to precisely time your gym intervals and level up your workouts You want to use your Apple Watch to train smarter You're looking for a simple, easy-to-use timer without complicated settings Every color change programs your next move into your body. This timer is your ultimate partner for a stronger daily workout.

Work. Rest. Find your rhythm. Teumbak is an interval timer for Tabata, HIIT, home workouts and stretching. Set work time, rest time and rounds, then start. Save your usual settings as a preset and open the same routine for your next session. Make each interval your own Choose work, rest and preparation durations, then set your rounds. Give each preset a name and color. Build routines of up to 60 minutes including preparation, with no extra rest interval after the final round. See your progress clearly Read the remaining time, current phase and round at a glance. Choose audio cues and haptic feedback. Pause, resume or move to the next interval as you need. Keep your routine on your device Save up to 500 recent completed sessions. Export your presets, history and preferences as a JSON file, or reset local data in Settings. No registration or account connection is required. A comfortable view Choose nine languages and light or dark mode. The timer and local history work offline. Teumbak includes banner ads on the home or completion screen; ads are not displayed while a workout is preparing, running or paused. Ads and external support pages use an internet connection. Audio and background behavior With sound enabled, the native app plays interval cue audio. With sound disabled, the timer pauses when you leave the app. Cue playback may pause music from another app. Audio and vibration depend on your device settings and operating-system state; check them with a short timer before use. An active workout is not restored after the app process is terminated. Teumbak is not a medical device and is not intended to diagnose, treat, cure or prevent a medical condition. Consult a healthcare professional for medical advice, diagnosis or treatment. Developed and operated by IBRDOS Co., Ltd. ((주)아이비알도스) Support: dev@ibrdos.com