Interval Timer ~ HIIT & Tabata vs bluebell

"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.

Spend less time watching the screen. Let your wrist guide the rhythm. bluebell brings haptic cues, timers, and reminders to Apple Watch, with easy setup on iPhone and iPad. PELVIC FLOOR EXERCISE CUES Set squeeze and release durations and repetitions, then follow haptic cues on your wrist. Follow professional guidance and choose settings appropriate for you. HAPTIC COUNTDOWN Choose a countdown from 1 second to 5 minutes. Feel a cue each second and a final alert when time is up. CUSTOM HAPTIC FLOWS Arrange patterns, intervals, loops, and repetitions on iPhone or iPad, then run your Flow on Apple Watch. ROUTINE REMINDERS Schedule reminders for your activities, so it's easier to make time for your routine. CODING-AGENT ALERTS Connect your agent's completion hook to bluebell hub on Mac and receive completion notifications across your Apple devices. The Mac app includes bluebellctl and an offline setup guide. You configure the integration for your tool. Haptic activities require Apple Watch. After syncing, your Watch uses its saved configuration. iPhone sync uses its paired Watch connection. iPad sync requires an internet connection, the same iCloud account on both devices, and bluebell open on Apple Watch. Coding-agent alerts require bluebell hub running on Mac, a user-configured integration, and the same iCloud account on receiving devices. Network conditions, notification settings, Focus, and system restrictions may affect delivery and activity execution. bluebell provides timing and rhythm guidance. It does not provide medical diagnosis or treatment.