Interval Timer by STRNTH
Next Big Leap Ltd Health & Fitness iPhoneiPadiPod touchApple Watch
Interval Timer by STRNTH is a free Health & Fitness app for iPhone and iPad by Next Big Leap Ltd. Requires iOS 15.1. Updated August 28, 2026.
- Price
- Free
- on the App Store
- Size
- 55 MB
- Age 12+
- Updated
- Aug 28
- 2026 · v1.0.3
Screenshots
About Interval Timer by STRNTH
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.
What’s new
Version 1.0.3 · Updated August 28, 2026
- Bug fixes
App privacy
The developer, Next Big Leap Ltd, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data: Advertising Data
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
- Usage Data: Advertising Data, Product Interaction
- Purchases: Purchase History
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, App Functionality
Alternatives to Interval Timer by STRNTH
Looking for apps like Interval Timer by STRNTH? Here are 6 similar apps on the App Store. The highest rated is Interval Timer Plus (4.9/5), and all 6 are free to download.
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Interval Timer: Run Walk, HIIT
4.5
-
Seconds Interval Timer
4.7
-
Intervals Pro: HIIT Timer
4.8
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Interval Timer - Tabata Timer
4.5
-
Interval Timer Plus
4.9
-
Tabata Timer and HIIT Timer
4.8
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Interval Timer by STRNTH | – | Free | August 28, 2026 | |
| Interval Timer: Run Walk, HIIT | 4.5 / 5 (535) | Free | Oct 6, 2026 | Compare |
| Seconds Interval Timer | 4.7 / 5 (23,752) | Free | Oct 8, 2026 | Compare |
| Intervals Pro: HIIT Timer | 4.8 / 5 (13,687) | Free | Sep 17, 2026 | Compare |
| Interval Timer - Tabata Timer | 4.5 / 5 (19,139) | Free | Nov 4, 2025 | Compare |
| Interval Timer Plus | 4.9 / 5 (6,260) | Free | Oct 1, 2026 | Compare |
| Tabata Timer and HIIT Timer | 4.8 / 5 (73,710) | Free | Oct 23, 2025 | Compare |