IntervalFlow: HIIT Timer
HIIT interval & Tabata timer
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
No ads, not even between rounds. Tabata, HIIT, EMOM, boxing — one tap to start, and the countdown stays on your Lock Screen.
A HIIT and interval timer that stays out of your way. No ads. No tracking. Nothing interrupts your workout.
WHY INTERVALFLOW
• No ads, ever — not a banner, not a video, not between rounds. Your countdown is never covered and your audio is never cut.
• No tracking — no analytics, no advertising identifier, no account. Your workouts stay on your device.
• Live Activity and Dynamic Island — your total time left stays on the Lock Screen and in the Dynamic Island. The screen stays awake while a workout is running, and when you return to the app the current phase is recalculated instantly, without replaying missed cues.
BUILT FOR REAL WORKOUTS
• Ready-made presets: Tabata, HIIT 40/20, EMOM, boxing rounds, and multi-set circuits.
• Custom builder: prepare, work, rest, rounds, sets, rest between sets, and cooldown — to the second.
• A countdown you can read across the room, with each phase in its own colour: work, rest, get ready, cooldown.
• Sound, haptics, and voice cues, so you can keep your eyes off the screen and on the set.
IT KEEPS THE RECORD
• Every finished session is logged on its own — time, rounds, and an estimate of calories.
• A daily streak and a weekly count, for the weeks when motivation needs a number.
Made for HIIT, Tabata, cross-training, boxing, running intervals, stretching, EMOM, and circuits — at the gym or on your living room floor.
Open it, tap a preset, and start. That is the whole app.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• First-run guide: four short pages that show how a workout runs, then you're in.
• Presets grouped by purpose — HIIT, running, strength & core, mobility — and Copy to edit: duplicate any built-in workout and tune it.
• Hear before you buy: a 15-second voice sample on the Pro screen.
• Voice cues in all 32 languages, and steadier countdowns when you come back to the app.
The developer, Hyunwoo Lee, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hyunwoo Lee
- Size
- 1.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 31 more
- English, Bengali, Bulgarian, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- IntervalFlow Pro $4.99
- Copyright
- © 2026 App Factory