IntervalFlow: HIIT Timer

IntervalFlow is a beautifully simple HIIT and interval timer — with no ads, ever.

No forced pop-ups. No banners. Just a fast, focused timer that gets out of your way so you can train.

WHY INTERVALFLOW

• No ads — never interrupt your workout with a pop-up or a banner.
• Color-coded countdown notification — your current phase, time left, and round stay on the lock screen and status bar. Glance mid-set without opening the app.
• Quick Settings tile — start your timer straight from the notification shade.
• Built for real training — big, clear countdowns with color-coded phases (work, rest, get ready, cooldown), sound, vibration, and optional voice cues.

READY TO GO

• Ready-made presets: Tabata, HIIT 40/20, EMOM, Boxing rounds, and multi-set circuits.
• Custom builder: set prepare, work, rest, rounds, sets, rest between sets, and cooldown — in seconds.
• Keeps running with the screen off, so the timer never stops mid-round.
• Automatic history — every session logs time, rounds, and estimated calories, with daily streaks and weekly counts.
• Material You — the app adapts to your wallpaper colors on Android 12+.

INTERVALFLOW PRO (optional, one-time purchase — no subscription)

• Named intervals — give each move its own name, and the voice coach calls it out loud.
• Workout chaining — link several workouts into one back-to-back session.

The core timer stays free with no ads. Pro simply adds power features for people who want them, with a single purchase — never a subscription.

Perfect for HIIT, Tabata, cross-training, boxing, running intervals, stretching, EMOM, and circuit training — at the gym or at home.

Download IntervalFlow and start your first interval in seconds.