IntervalFree vs Ntrvl

IntervalFree is the workout interval timer that's actually free. No paywalls. No ads. No tricks. Every feature is unlocked from day one — and stays that way forever. SET UP IN SECONDS Configure your action duration, break duration, and number of sets with intuitive scroll pickers. Tap Start and your profile is saved automatically. No account required. GO CUSTOM: BUILD ROUTINES BLOCK BY BLOCK Need more than one interval pattern in a session? Switch to Custom mode and build your routine block by block — a warm-up, a legs circuit, an abs finisher — each with its own action time, rest time, and number of rounds. Add a breather between blocks or keep it rolling; the whole session runs as one seamless timer. Prefer things simple? Simple mode hasn't changed at all. You'll never have to touch Custom, and everything you've already saved looks and behaves exactly as before. GLANCEABLE & MULTITASK-READY A large timer ring shows your remaining time at a glance—green for action, blue for break. With Live Activities, your progress stays visible right on your Lock Screen or Dynamic Island. Switch apps or lock your phone with confidence; the timer runs perfectly in the background. YOUR SOUND, YOUR PACE Choose from multiple Sound Themes to match your workout vibe. High-fidelity audio alerts keep you on pace even when your phone is in your pocket, and our smart audio handling ensures your music stays clear while the timer beeps. SAVE UNLIMITED WORKOUT PROFILES — NOW PROTECTED Create as many workout profiles as you need. Name each one, pick from 20+ activity icons (running, swimming, yoga, boxing, and more), and choose from 10 colors. Every profile is instantly recognizable in your workout library. Your saved presets are now protected: the settings can't be changed by accident — tap Edit first. Your edits are kept when you tap Save Preset, or when you start the workout. YOUR WORKOUT LIBRARY See how many times you've started and finished each workout. Tap any profile to load it instantly—no re-entering settings every time. Quick-start chips let you jump into your most-used routines in one tap. CELEBRATE EVERY WIN Every completed workout gets a celebration screen with your stats, a trumpet fanfare, and a fun animated surprise to keep you motivated. FULLY CUSTOMIZABLE • Custom mode: multi-block routines with per-block intervals • Protected presets: no more accidental overwrites • Background Support: Use other apps while you train • Live Activities: Real-time progress on your Lock Screen • Sound Themes: Multiple audio styles to choose from • Adjustable action and break durations (seconds to minutes) • 1 to 99 sets per workout • 20+ workout icons & 10 profile colors • Profiles auto-save on start WHY INTERVALFREE? We were tired of interval timer apps that lock basic features behind subscriptions. So we built one that gives you everything—for free. No premium tiers. No "free trial" that expires. No data sold to advertisers. IntervalFree is maintained by a small team who believes great tools should be free. If it becomes part of your routine, you can support us with a voluntary coffee—but there's absolutely no pressure. Perfect for HIIT, Tabata, circuit training, boxing rounds, stretching, meditation, or any activity that uses timed intervals. Requires iOS 17.0 or later. Works on iPhone and iPad.

Ntrvl is an interval timer for iPhone and Apple Watch. Set up your workout in seconds and go. Haptic feedback, audio cues, and color changes keep you locked in without needing to look at your phone. Whether it's HIIT, circuit training, Tabata, or a simple work/rest routine, Ntrvl handles the timing so you can handle the work. Every workout can be tracked on Apple Watch and automatically saved to Apple Health, including active calories, heart rate, and workout duration. Start fast with built-in presets for Tabata, HIIT, EMOM, and Nordic 4x4 or build your own from scratch. Save up to 10 custom workouts and reorder them however you like so your go-to sessions are always one tap away. - Customizable work and rest intervals - Built-in presets: Tabata, Nordic 4x4, HIIT, EMOM - Save up to 10 custom workouts - Apple Watch companion with full workout controls - Workout tracking with automatic Apple Health sync - Drag-to-set time controls - Haptic, audio, and visual interval cues - Background audio support (keep your music playing) - Clean, glanceable interface