Seconds Interval Timer
Runloop Ltd Health & Fitness iPhoneiPadiPod touchApple Watch
Seconds Interval Timer is a free Health & Fitness app for iPhone and iPad by Runloop Ltd. Rated 4.7/5 from 23,777 ratings. Requires iOS 18.0.
- Rating
- 4.7
- 23.7K ratings
- Price
- Free
- on the App Store
- Size
- 99 MB
- Age 4+
- Updated
- Oct 22
- 2026 · v26.0
Screenshots
About Seconds Interval Timer
Seconds is an interval timer for HIIT, Tabata, EMOM, circuits and any workout built from timed intervals. It calls each interval out loud, keeps running with the screen off, and runs on iPhone, iPad and Apple Watch. Apple has featured it, and Joe Wicks, The Body Coach, has said it is the fitness app he uses more than any other. BUILD ANY WORKOUT - Start from a HIIT, Tabata or circuit template, or build a timer from scratch with sets, rounds and intervals of different lengths. - Chain timers into one compound timer, so a warm-up flows into the main set and then a cool-down. - Color-code every interval so you know what is coming before the beep. - Share a timer with a friend in one tap. HEAR IT, DON'T WATCH IT - Voice cues call out each interval by name and warn you before the next one starts. - Beeps and bells are there too if you would rather not be talked at. - Play your own music, per timer or per interval. Cues duck the music and it comes back up when they are done. - The timer keeps going in the background while you use other apps or the screen sleeps. ON THE GYM FLOOR - A full-screen, color-coded display you can read from across the room, in portrait or landscape. On iPad it uses the whole screen. - A lock button stops a stray tap from pausing your set. APPLE WATCH - Seconds runs on the watch by itself, so the phone can stay in the locker. Timers you build on the phone sync to the wrist, and Quick Intervals builds a basic circuit on the watch itself. MORE TIMERS - A stopwatch that marks your best and worst laps. - A countdown timer with five preset durations (three on Apple Watch). APPLE HEALTH - Save workouts and mindful sessions to Health. With a heart rate monitor connected, Seconds reads your body measurements and year of birth from Health to estimate calories burned. FREE TO TRY, ONE PAYMENT TO UNLOCK - Everything is available from the first launch. Build any timer and run it. - Each timer locks after you run it once. A single in-app purchase removes the lock on every timer you make. SECONDS AND SECONDS PRO - Seconds Pro is the same app, paid once up front, with nothing to unlock. The two are separate products and a purchase in one does not carry over to the other. If you bought Seconds Pro, download Seconds Pro. If you bought the unlock in Seconds, download Seconds and use Restore Purchases.
Ratings & reviews
4.7
23.7K ratings
What’s new
Version 26.0 · Updated October 22, 2026
26.0 - Most of the app has been rebuilt: Home, the timer editors, Templates, Stopwatch, Quick Timer, Settings and the welcome screens are all new. The running timer is unchanged. - The app is now always dark, with an orange accent that the watch app and widgets share. - Stopwatch and Quick Timer work in landscape again on iPhone. - Search on Home finds folders as well as timers. - Apple Watch fetches whatever it is missing from iPhone each time the watch app opens, and runs the preparation interval before a saved timer. - You can run your newest timer as many times as you like, and creating a new timer replaces it. Your previous timers are still listed, and upgrading restores them.
App privacy
The developer, Runloop Ltd, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Health & Fitness: Health, Fitness
- Contact Info: Email Address
- User Content: Customer Support
- Identifiers: User ID
Used for: App Functionality
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:
- Other Data: Other Data Types
- Purchases: Purchase History
- Identifiers: Device ID
- Diagnostics: Crash Data, Other Diagnostic Data
Used for: Analytics, App Functionality
Alternatives to Seconds Interval Timer
Looking for apps like Seconds Interval Timer? Here are 6 similar apps on the App Store. The highest rated is Interval Timer □ HIIT Timer (4.8/5), and all 6 are free to download.
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Interval Timer □ HIIT Timer
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Intervals Pro: HIIT Timer
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Interval Timer - Tabata Timer
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Interval Timer
4.7
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Tabata Timer and HIIT Timer
4.8
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Timer Plus - Workouts Timer
4.8
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Seconds Interval Timer | 4.7 / 5 (23,777 ratings) | Free | October 22, 2026 | |
| Interval Timer □ HIIT Timer | 4.8 / 5 (87,293) | Free | Mar 26, 2026 | Compare |
| Intervals Pro: HIIT Timer | 4.8 / 5 (13,711) | Free | Oct 27, 2026 | Compare |
| Interval Timer - Tabata Timer | 4.5 / 5 (19,143) | Free | Nov 4, 2025 | Compare |
| Interval Timer | 4.7 / 5 (3,604) | Free | Mar 6, 2026 | Compare |
| Tabata Timer and HIIT Timer | 4.8 / 5 (73,721) | Free | Oct 23, 2025 | Compare |
| Timer Plus - Workouts Timer | 4.8 / 5 (61,240) | Free | Oct 27, 2026 | Compare |