Circuit Timer: Interval & HIIT
Tabata, Boxing & Gym Workouts
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Build your own interval circuits and train hands-free. Cues play over your music, the countdown stays on your Lock Screen, and your Apple Watch taps at every change.
Build your own interval circuits for HIIT, Tabata, boxing rounds, EMOM and circuit training, then run them with precise timing, voice announcements, sounds and haptics.
CREATE YOUR PERFECT WORKOUT
Design circuits with unlimited intervals, each with its own name, duration and alarm sound. Repeat single intervals or the whole circuit, by count or for a set time. Choose from 24 alarm sounds, a spoken countdown, or both.
STAY IN THE ZONE
A full-screen player with a progress ring, countdown and interval timeline keeps you focused. The final seconds of each interval pulse so you're ready for what's next, and voice announcements call out each interval by name, so you never have to look at your screen.
TRAIN WITH YOUR MUSIC
Interval sounds play over your music instead of pausing it. The current interval and countdown stay on your Lock Screen and in the Dynamic Island, and cues keep working through phone calls. Start any circuit hands-free with Siri.
APPLE WATCH
Run circuits from your wrist with live heart rate, heart rate zones, active calories and a tap at every interval change. Starting a workout on your iPhone? Your watch follows along with the same taps and your heart rate. A Smart Stack card keeps the current interval in view, even with the app closed.
TRACK YOUR PROGRESS
See your workout history with streaks, completion stats and total training time. Save workouts to Apple Health as High Intensity Interval Training.
FREE TO START
• 1 circuit with every feature: alarms, haptics, voice and history
CORE UPGRADE
• Unlimited circuits
• iCloud sync across your devices
• Apple Health
PRO UPGRADE
• Everything in Core
• Apple Watch app
Both upgrades are one-time purchases. No subscription.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Small improvements and fixes.
The developer, Lawman Services, LLC, 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
- Lawman Services, LLC
- Size
- 7.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Core $2.99
- Pro $4.99
- Copyright
- © 2026 Lawman Services LLC

