ClearHiiT: Interval Timer

ClearHiiT is the workout interval timer built for HIIT, Tabata, Treadmill, Circuit, and Spin training.

Build workouts in seconds, organize them into folders, and let clear voice cues guide you through every interval—without constantly checking your screen.

Build Better Workouts : Start with a quick preset or build your workout from scratch. Set warm-up, work, recovery, cooldown, and transition intervals with complete control. Create unlimited workouts and organize them into folders by training style, fitness goal, athlete, client, or family member.

Dedicated Tabata Sessions: Create dedicated Tabata workouts with the classic work and recovery structure built in. Optionally enter the exercise on each work phase, then start training.

Track Your Progress: After each workout, tell the app how it felt – Too Easy, Just Right or Too Hard. Your history shows every session, your current and longest streak, and a training heatmap of your active minutes by week, month or all time. Manage your history with simple controls to keep your entries tidy.

Know Exactly How Hard You're Working: See your heart rate live on your workout screens, read in real time from your Apple Watch. Each heart rate zone has its own color, so you can tell at a glance whether you're warming up, pushing hard or recovering, and adjust your effort without breaking stride. Your current zone also shows right on your Apple Watch during the workout.

Train Without Watching the Screen: Press Start and focus on your workout. Clear voice prompts and audio cues play over your music, podcast, or audiobook, telling you when to work, recover, and transition. Choose extended voice prompts for more guidance, or use minimal prompts when you want fewer interruptions.

Landscape Workout Display: Turn your iPhone sideways for a clear, easy-to-read landscape workout display. See the interval and countdown at a glance, ideal for treadmill sessions, the gym, or when your phone is across the room.

Choose Your Workout Mode

Standard: Flexible interval training for HIIT, strength training, boxing, rowing, bodyweight workouts, and more.

Tabata: A dedicated Tabata session with optional exercise descriptions on the work phases.

Treadmill: Set target speed and incline for every interval, so you know exactly what to set for each phase.

Circuit: Name every exercise and follow your circuit without having to remember what's next.

Spin: Set target difficulty and power for every interval, giving every effort a clear goal.

Train From Your Wrist: Start and follow workouts directly from Apple Watch, with live synchronization to your iPhone.

Keep Training With Your Phone Locked: Put your phone in your pocket and concentrate on the workout. ClearHiiT keeps your intervals running with the screen locked and delivers your cues when you need them. When the final interval ends, you'll know you've finished exactly the workout you planned.

Features

• Organize workouts into folders
• Create separate workout libraries for yourself, clients, friends, or family
• Unlimited custom workouts
• Quick-start workout presets
• Full control over every workout phase
• Standard, Tabata, Treadmill, Circuit, and Spin modes
• Dedicated Tabata session configuration
• Per-interval treadmill speed and incline targets
• Named exercises for circuit workouts
• Per-interval difficulty and power targets for Spin workouts
• Extended voice prompts and audio cues over your music
• Minimal voice prompts option
• Countdown flash before every interval
• Portrait and landscape workout displays
• Background timing with the screen locked
• Apple Watch app with live iPhone synchronization
• Live heart rate and color-coded zones, on iPhone and Apple Watch
• Simple workout history management
• Tidal and Daybreak themes
• English, Spanish, French, and German

Using ClearHiiT with the Apple Health app on iPhone empowers you to better manage your health.

No clutter. No subscription. No data collected. Just your workout, on time.