Interval Timer by STRNTH
Workout & HIIT interval timer
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Build any interval timer you want, run it hands-free with voice and sound cues and read it from across the room. Free, with a one-time upgrade to remove ads.
Interval Timer by STRNTH is a free interval timer for HIIT, Tabata, EMOM, AMRAP, boxing rounds, running intervals, stretching and more. Build any timer you want with no fixed structure, then run it hands-free and read it from across the room.
BUILD ANY TIMER
- Add as many steps as you like, each with its own label, duration, colour, sound and voice.
- Group steps into repeat blocks so a round loops as many times as you need.
- Link separate timers together to chain a warm-up, workout and cool-down into one session.
- Start from a template: Couch to 5K, Tabata, HIIT, 7 minute workout, EMOM, AMRAP, boxing rounds, Pomodoro, box breathing and full body stretch.
RUN IT HANDS-FREE
- A giant readout inside a progress ring, sized to read from across the gym.
- Full-screen colour per step so you know your phase at a glance.
- Voice reads each step and announces what is next before it arrives.
- Sound cues on the last three seconds, plus beep, go, switch, rest, bell, horn, gong and whistle tones. Import your own sounds too.
- Optional spoken 3-2-1 countdown, a cadence metronome from 60 to 180 BPM and haptic feedback.
- Choose what the screen shows: interval time, total time, interval count, the clock or heart rate.
MORE TOOLS
- A countdown tab with quick presets for a fast single timer.
- A stopwatch with laps that highlight your fastest and slowest split.
- Light and dark themes and your own custom step colours.
- Share a timer as a link or a file, and import timers others send you.
ACROSS YOUR DEVICES
- An Apple Watch companion runs your timers on the wrist with colour and haptics.
- Pair a Bluetooth heart rate strap to see live BPM, zones and more while you train.
- Save finished sessions to Apple Health as workouts.
- Back up your timers to your private iCloud.
FREE, WITH A ONE-TIME UPGRADE
Interval Timer is free and supported by ads. A single 9.99 purchase removes ads for good. No accounts, no subscriptions, no cloud sign-in. Your timers stay on your device.
Part of the STRNTH family of training apps.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Next Big Leap Ltd, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Next Big Leap Ltd
- Size
- 58 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Remove ads $9.99
- Copyright
- © 2026 Next Big Leap Ltd