Interval Timer

Take complete control of your workouts with Interval Timer — a fast, clean, and 100% ad-free workout timer built for all your interval training needs. Free, with zero ads, subscriptions, or tracking.

Whether timing Tabata sets, HIIT cardio, boxing rounds, circuit training, or EMOM / WOD routines, Interval Timer delivers crystal-clear visual and audio cues without unnecessary clutter.

KEY FEATURES:

⏱️ Instant Workouts & Full Customization
• Built-in workouts for Tabata, HIIT (30/15), Circuit training (45/15), Boxing rounds (3m/1m), and EMOM.
• Create, customize, and reorder your own workouts with drag-and-drop ease.
• Configure Prepare, Work, and Rest durations down to the second.
• Set total rounds from 1 to 99 with smooth, intuitive wheel pickers.

🔔 Distinct Audio & Haptic Alerts
• Clear countdown sound beeps signal interval transitions so you never have to stare at your screen.
• Tactical vibration pulses let you feel each transition even with loud music or in noisy gym environments.
• Separate toggles for sounds and vibrations in Settings.

📱 Seamless Lock Screen & Background Play
• Runs reliably in the background using an Android foreground service.
• Full lock screen notification controls: pause, resume, and check remaining set time without unlocking your phone.

🎨 High-Visibility, Color-Coded Interface
• Immediate color-coded screen changes reflect your current phase (Indigo for Prepare, Emerald for Work, Amber for Rest).
• Large, bold countdown numbers readable from across the room.

🛡️ 100% Free, Offline & Privacy First
• No ads, no in-app purchases, no subscriptions.
• No account registration or sign-in required.
• No third-party data tracking or personal data collection.
• All your routines and workouts stay exclusively on your local device.

PERFECT FOR:
• HIIT & Tabata interval training
• Circuit training & bootcamp workouts
• Boxing round timer & martial arts sparring
• CrossFit, EMOM & WOD conditioning
• Strength training, gym sets & rest timers
• Running, sprint intervals & cardio conditioning
• Stretching, mobility routines & yoga

Keep your focus where it belongs — on your movement and your workout. Download Interval Timer today!