IntervalSmith
HIIT, Tabata & Circuit Timer
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Build any interval workout in seconds — HIIT, Tabata, circuits, yoga, and more. One-time Pro upgrade. No subscription, ever.
IntervalSmith is a precision interval timer built around the way you actually train. Stack warm-up, exercise, rest, and cool-down stages into unlimited sections, set repeats per section, and let the app run the clock while you run the workout.
BUILD YOUR WORKOUT
Create any interval structure in seconds. Add multiple sections, each with its own stages and repeat count. Need rest between rounds? Set it once — IntervalSmith handles the math automatically.
AUDIO & HAPTIC CUES
Never miss a transition. Distinct tones mark each stage type, a 3-2-1 countdown ticks before every change, and an optional halfway alert helps you pace yourself. Everything works through your headphones.
APPLE WATCH (Pro)
Run your workout from your wrist. The Watch app mirrors your full interval structure with a smooth progress ring and live countdown — staying accurate even when your wrist is down. Always On Display compatible.
TEMPLATE LIBRARY (Pro)
Browse ready-made workouts — Tabata, AMRAP, EMOM, strength circuits, yoga flows, and more — and add them to your library with one tap.
IMPORT & EXPORT (Pro)
Share workouts with training partners or back them up. Export any workout as a file and import from other IntervalSmith users.
HEALTHKIT (Pro)
Save every session to Apple Health automatically. Workouts are classified by activity type — running, yoga, strength training, cycling, and more — so your rings close and your stats stay accurate.
WORKOUT HISTORY (Pro)
Every session is logged with completion time, duration, and whether you finished.
FREE & PRO
IntervalSmith is free with unlimited custom workouts. Upgrade to Pro with a single one-time purchase — no subscriptions, no recurring fees — to unlock the Watch app, full history, Template Library and Import & Export. Pro includes Family Sharing.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Fixed an issue where background music (Apple Music, Spotify, etc.) could get interrupted when starting your first workout after opening the app
• Smoother Apple Watch workout start — IntervalSmith now waits for your Watch to be ready before beginning the countdown, so both devices stay in sync from the very first second
• Added an About screen with app info and a link to support
• Settings now shows your Pro status, and section descriptions are available via a quick info button
• Various visual polish and small bug fixes throughout Settings
The developer, Frank Fattizzi, 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
- Frank Fattizzi
- Size
- 2.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later. - Apple Watch
Requires watchOS 10.6 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- IntervalSmith Pro $4.99
- Copyright
- © 2026 Professional IT Services, LLC
