About Seconds Interval Timer
Seconds Interval Timer is the best interval timer for Tabata, HIIT & Circuit Training workouts. As well as being featured by Apple, it is recommended by celebrity and personal trainers to their clients all around the...
Seconds Interval Timer is the best interval timer for Tabata, HIIT & Circuit Training workouts. As well as being featured by Apple, it is recommended by celebrity and personal trainers to their clients all around the globe. INTERVAL TIMER: - Full screen, colored display. Easy to read from a distance. Landscape or portrait. - Templates for HIIT, Tabata & Circuit Training. Combine timers for ultimate control. - Speaks your interval names & can provide warning for upcoming intervals. - Other alerts including beeps and bells are available. - Assign music per interval or per interval timer. - Match the intensity of your music to the intensity of your HIIT workoutk. - Interval timer runs in the background while you use other apps. - Share your interval timer with a friend. ADDITIONAL TIMERS: - Stopwatch highlights best and worst lap times. - Countdown Timer with 5 preset durations (only first 3 on Apple Watch). APPLE HEALTH: - Seconds Interval Timer can use Apple Health to save workouts or mindful sessions, read body measurements and year of birth to calculate calorie expenditure in conjunction with a heart rate monitor. IN-APP PURCHASE: - All the features of Seconds Interval Timer are available to try for free. However, a one-time in-app purchase is required to use the timers you create more than one time. VARIANTS: - Please note, Seconds Interval Timer and Seconds Pro Interval Timer are separate products. Once paid for they each contain identical features. However, they are not interchangeable. If you have purchased one you should always download that version and in the case of Seconds Interval Timer, restore the in-app purchase within it gain access to the upgraded features.
Version History Seconds for Apple Watch - Added new compact interval template - Added new setting for intervals template - Added option to remove the info bar during workouts - Added link to Settings from timer controls - Added option to exit to the home screen - Restored haptic feedback only alerts - Restored haptic feedback to all alerts - Fixed volume control from settings - Fixed alert enabling from settings - Fixed watch countdown timer not using user defined times - Fixed delay of alerts and haptic feedback - Fixed indefinite intervals - Updated minimum supported watchOS to version 26 watchOS 26 introduced changes that made the previous version of Seconds for Apple Watch stop working. Unfortunately, there was no way to fix it—I had to rebuild the watch app from scratch. In order to function as expected, the app now requires watchOS 26. This means Apple Watches older than Series 6 are no longer supported—I'm sorry if this affects you. All Series 6 and newer watches can update to watchOS 26 (you may also need iOS 18 on your iPhone). If these improvements have resolved any issues you had, an updated review would mean a lot. 3.24.2 11/30/2025 Thank you for your feedback on the previous version. This update resolves: - Apple Watch navigation issue - Cut & Paste toolbar hidden - Apple Watch timer sort order If these improvements have addressed your concerns, we would greatly appreciate an updated rating. 3.24.1 11/16/2025 New Apple Watch app! As has been pointed out, the latest update to watchOS 26 broke the existing Apple Watch app. The previous version was developed when Apple Watch was first introduced and many workarounds were required to get something that behaved as I wanted. Apple changed how they wanted developers to build apps several years ago and the old version of the watch app and this approach were incompatible, but the new approach was also a step back in many ways and some features were not possible. This led to difficulties updating the app. The issues relating to watchOS 26 and the previous version of the app have meant that I have had to redevelop the app from the ground up. This means that finally some features that people have been requesting are now included in the app where they were not possible before. But it also means that, in the short term, there may some missing features and inconveniences. These will be ironed out over time. My priority has been to get a working version of the Apple Watch app ready as quickly as possible so that users are still able to use it for their training. 3.24 11/03/2025 SDK Updates 3.23 08/26/2025 - Haptic feedback in iPhone app now stronger with different feedback at end of timers. - Added option to disable pre-timer ducking - Fixed default voice selecting voice for blind users that Apple recently added. - Fixed audio not reducing for intervals that have the option enabled. - Fixed text to speech with warning last interval speech. - Fixed audio ducking when exiting a timer 3.22.3 03/20/2023 ⁃ Added a widget for launching your favourite timers ⁃ Added Apple Watch icons to support Apple Watch Ultra ⁃ Changed initial voice selection and ordering ⁃ Changed timer to allow scrolling while is locked 3.22.1 01/02/2023 iPhone / iPad changes: - Timer list search - Timer list sorting - Deleted timers are moved to trash and can be recovered - Publish to intervaltimer.com (and unpublish them) - Convert timer into a custom timer - Convert selected timers to compound timer Apple Watch changes: - Improved syncing - Tapping info bar displays timer options (Discard, end, lock) - Sort options from iPhone now used 3.21.8 06/19/2022 iPhone / iPad changes: - Timer list search - Timer list sorting - Deleted timers are moved to trash and can be recovered - Publish to intervaltimer.com (and unpublish them) - Convert timer into a custom timer - Convert selected timers to compound timer Apple Watch changes: - Improved syncing - Tapping info bar displays timer options (Discard, end, lock) - Sort options from iPhone now used 3.21.7 06/12/2022 • Added countdown screen for external displays • Added custom message for half-way alerts 3.20 02/20/2021 • Improved Apple Watch data syncing. • Increased size of text in external display. • Disabled audio ducking for timers that use cadence option. • Fixed crash in media picker. • Fixed color customisation fields. 3.19.3 01/11/2021 Improved Apple Watch data syncing. Removed automatic timer creation from clipboard. Added CSV import for custom timers. 3.19.2 12/07/2020 Improved Apple Watch data syncing. Removed automatic timer creation from clipboard. Added CSV import for custom timers. 3.19.1 11/07/2020 Added option to share a device link - that can be used to launch Seconds from other apps - by swiping right on a timer in the list. Fixed timer on external displays. 3.18 12/06/2019 Added preset colors for old light and dark themes. Fixed translations. Fixed color customization. Fixed font sizes. 3.17.3 11/14/2019 - Added $(round) token which can be added to interval names and will be replaced with the interval count. - Added iOS Dark Mode support - Fixed Disable Auto-lock not working in Countdown Timer. - Fixed crash when saving to health. - Fixed interval colour not updating after selection. - Fixed custom timers not always starting on Apple Watch. - Fixed text size for heart rates in main display. - Fixed crash when tapping My Intervals on Apple Watch. - Fixed interval timers not appearing on Apple Watch if unnamed. - Fixed timer button still active when the timer locked. - Fixed timer not resetting upon completion. - Fixed small interval names in landscape mode. - Fixed lock button disappearing. - Fixed last alert not sounding. Bug fixes and performance improvements. 3.17.2 10/31/2019 - iOS 13 updates. - New support system. - Customisable labels for split intervals. - Added indicator for count up intervals. - Fixes crash on Apple Watch. - Fixes upgrade issue on Apple Watch. - Fixes crash after purchasing upgrade (really sorry about this one, that's not a good look) - Fixes Bluetooth heart rate sensor connectivity. Bug fixes and performance improvements. 3.17.1 10/05/2019 - iOS 13 updates. - New support system. - Customisable labels for split intervals. - Fixes crash on Apple Watch. - Fixes upgrade issue on Apple Watch. Bug fixes and performance improvements. 3.17 10/04/2019 - iOS 13 updates. - Fixes crash on Apple Watch. Bug fixes and performance improvements. 3.16.3 10/03/2019 • Stopwatch that works in landscape and portrait, highlights best and worst lap times and syncs with Apple Watch. • A quick access countdown timer with 5 preset durations (only first 3 on Apple Watch). Upgraded users may configure their own preset durations. Countdown syncs with Apple Watch. Bug fixes and performance improvements. 3.16.2 05/02/2019 • Stopwatch that works in landscape and portrait, highlights best and worst lap times and syncs with Apple Watch. • A quick access countdown timer with 5 preset durations (only first 3 on Apple Watch). Upgraded users may configure their own preset durations. Countdown syncs with Apple Watch. Bug fixes and performance improvements. 3.16.1 04/25/2019 • Stopwatch that works in landscape and portrait, highlights best and worst lap times and syncs with Apple Watch. • A quick access countdown timer with 5 preset durations (only first 3 on Apple Watch). Upgraded users may configure their own preset durations. Countdown syncs with Apple Watch. Bug fixes and performance improvements. 3.16 04/19/2019 Bug fixes and performance improvements. 3.15.3 03/05/2019 Bug fixes and performance improvements. 3.15.2 02/19/2019 Bug fixes and performance improvements. 3.15.1 02/13/2019 Added custom end message to Apple Watch. Added preparation interval to Apple Watch. Fixed issue where Apple Watch timer screen would scroll. Fixed halfway alerts in split intervals. 3.15 12/13/2018
Previous Versions
Here you can find the changelog of Seconds Interval Timer since it was posted on our website on 2016-09-29 02:04:54.
The latest version is 3.24.2 and it was updated on 2026-06-23 06:09:57. See below the changes in each version.
Seconds Interval Timer version 3.24.2
Updated At: 2026-06-02
Changes: Version History Seconds for Apple Watch
- Added new compact interval template
- Added new setting for intervals template
- Added option to remove the info bar during workouts
- Added link to Settings from timer controls
- Added option to exit to the home screen
- Restored haptic feedback only alerts
- Restored haptic feedback to all alerts
- Fixed volume control from settings
- Fixed alert enabling from settings
- Fixed watch countdown timer not using user defined times
- Fixed delay of alerts and haptic feedback
- Fixed indefinite intervals
- Updated minimum supported watchOS to version 26
watchOS 26 introduced changes that made the previous version of Seconds for Apple Watch stop working. Unfortunately, there was no way to fix it—I had to rebuild the watch app from scratch.
In order to function as expected, the app now requires watchOS 26. This means Apple Watches older than Series 6 are no longer supported—I'm sorry if this affects you. All Series 6 and newer watches can update to watchOS 26 (you may also need iOS 18 on your iPhone).
If these improvements have resolved any issues you had, an updated review would mean a lot. 3.24.2 11/30/2025 Thank you for your feedback on the previous version. This update resolves:
- Apple Watch navigation issue
- Cut & Paste toolbar hidden
- Apple Watch timer sort order
If these improvements have addressed your concerns, we would greatly appreciate an updated rating. 3.24.1 11/16/2025 New Apple Watch app!
As has been pointed out, the latest update to watchOS 26 broke the existing Apple Watch app. The previous version was developed when Apple Watch was first introduced and many workarounds were required to get something that behaved as I wanted. Apple changed how they wanted developers to build apps several years ago and the old version of the watch app and this approach were incompatible, but the new approach was also a step back in many ways and some features were not possible. This led to difficulties updating the app.
The issues relating to watchOS 26 and the previous version of the app have meant that I have had to redevelop the app from the ground up. This means that finally some features that people have been requesting are now included in the app where they were not possible before. But it also means that, in the short term, there may some missing features and inconveniences. These will be ironed out over time. My priority has been to get a working version of the Apple Watch app ready as quickly as possible so that users are still able to use it for their training. 3.24 11/03/2025 SDK Updates 3.23 08/26/2025 - Haptic feedback in iPhone app now stronger with different feedback at end of timers.
- Added option to disable pre-timer ducking
- Fixed default voice selecting voice for blind users that Apple recently added.
- Fixed audio not reducing for intervals that have the option enabled.
- Fixed text to speech with warning last interval speech.
- Fixed audio ducking when exiting a timer 3.22.3 03/20/2023 ⁃ Added a widget for launching your favourite timers
⁃ Added Apple Watch icons to support Apple Watch Ultra
⁃ Changed initial voice selection and ordering
⁃ Changed timer to allow scrolling while is locked 3.22.1 01/02/2023 iPhone / iPad changes:
- Timer list search
- Timer list sorting
- Deleted timers are moved to trash and can be recovered
- Publish to intervaltimer.com (and unpublish them)
- Convert timer into a custom timer
- Convert selected timers to compound timer
Apple Watch changes:
- Improved syncing
- Tapping info bar displays timer options (Discard, end, lock)
- Sort options from iPhone now used 3.21.8 06/19/2022 iPhone / iPad changes:
- Timer list search
- Timer list sorting
- Deleted timers are moved to trash and can be recovered
- Publish to intervaltimer.com (and unpublish them)
- Convert timer into a custom timer
- Convert selected timers to compound timer
Apple Watch changes:
- Improved syncing
- Tapping info bar displays timer options (Discard, end, lock)
- Sort options from iPhone now used 3.21.7 06/12/2022 • Added countdown screen for external displays
• Added custom message for half-way alerts 3.20 02/20/2021 • Improved Apple Watch data syncing.
• Increased size of text in external display.
• Disabled audio ducking for timers that use cadence option.
• Fixed crash in media picker.
• Fixed color customisation fields. 3.19.3 01/11/2021 Improved Apple Watch data syncing.
Removed automatic timer creation from clipboard.
Added CSV import for custom timers. 3.19.2 12/07/2020 Improved Apple Watch data syncing.
Removed automatic timer creation from clipboard.
Added CSV import for custom timers. 3.19.1 11/07/2020 Added option to share a device link - that can be used to launch Seconds from other apps - by swiping right on a timer in the list.
Fixed timer on external displays. 3.18 12/06/2019 Added preset colors for old light and dark themes.
Fixed translations.
Fixed color customization.
Fixed font sizes. 3.17.3 11/14/2019 - Added $(round) token which can be added to interval names and will be replaced with the interval count.
- Added iOS Dark Mode support
- Fixed Disable Auto-lock not working in Countdown Timer.
- Fixed crash when saving to health.
- Fixed interval colour not updating after selection.
- Fixed custom timers not always starting on Apple Watch.
- Fixed text size for heart rates in main display.
- Fixed crash when tapping My Intervals on Apple Watch.
- Fixed interval timers not appearing on Apple Watch if unnamed.
- Fixed timer button still active when the timer locked.
- Fixed timer not resetting upon completion.
- Fixed small interval names in landscape mode.
- Fixed lock button disappearing.
- Fixed last alert not sounding.
Bug fixes and performance improvements. 3.17.2 10/31/2019 - iOS 13 updates.
- New support system.
- Customisable labels for split intervals.
- Added indicator for count up intervals.
- Fixes crash on Apple Watch.
- Fixes upgrade issue on Apple Watch.
- Fixes crash after purchasing upgrade (really sorry about this one, that's not a good look)
- Fixes Bluetooth heart rate sensor connectivity.
Bug fixes and performance improvements. 3.17.1 10/05/2019 - iOS 13 updates.
- New support system.
- Customisable labels for split intervals.
- Fixes crash on Apple Watch.
- Fixes upgrade issue on Apple Watch.
Bug fixes and performance improvements. 3.17 10/04/2019 - iOS 13 updates.
- Fixes crash on Apple Watch.
Bug fixes and performance improvements. 3.16.3 10/03/2019 • Stopwatch that works in landscape and portrait, highlights best and worst lap times and syncs with Apple Watch.
• A quick access countdown timer with 5 preset durations (only first 3 on Apple Watch). Upgraded users may configure their own preset durations. Countdown syncs with Apple Watch.
Bug fixes and performance improvements. 3.16.2 05/02/2019 • Stopwatch that works in landscape and portrait, highlights best and worst lap times and syncs with Apple Watch.
• A quick access countdown timer with 5 preset durations (only first 3 on Apple Watch). Upgraded users may configure their own preset durations. Countdown syncs with Apple Watch.
Bug fixes and performance improvements. 3.16.1 04/25/2019 • Stopwatch that works in landscape and portrait, highlights best and worst lap times and syncs with Apple Watch.
• A quick access countdown timer with 5 preset durations (only first 3 on Apple Watch). Upgraded users may configure their own preset durations. Countdown syncs with Apple Watch.
Bug fixes and performance improvements. 3.16 04/19/2019 Bug fixes and performance improvements. 3.15.3 03/05/2019 Bug fixes and performance improvements. 3.15.2 02/19/2019 Bug fixes and performance improvements. 3.15.1 02/13/2019 Added custom end message to Apple Watch.
Added preparation interval to Apple Watch.
Fixed issue where Apple Watch timer screen would scroll.
Fixed halfway alerts in split intervals. 3.15 12/13/2018
Seconds Interval Timer version 3.24.2
Updated At: 2025-11-30
Changes: Seconds for Apple Watch
- Added new compact interval template
- Added new setting for intervals template
- Added option to remove the info bar during workouts
- Added link to Settings from timer controls
- Added option to exit to the home screen
- Restored haptic feedback only alerts
- Restored haptic feedback to all alerts
- Fixed volume control from settings
- Fixed alert enabling from settings
- Fixed watch countdown timer not using user defined times
- Fixed delay of alerts and haptic feedback
- Fixed indefinite intervals
- Updated minimum supported watchOS to version 26
watchOS 26 introduced changes that made the previous version of Seconds for Apple Watch stop working. Unfortunately, there was no way to fix it—I had to rebuild the watch app from scratch.
In order to function as expected, the app now requires watchOS 26. This means Apple Watches older than Series 6 are no longer supported—I'm sorry if this affects you. All Series 6 and newer watches can update to watchOS 26 (you may also need iOS 18 on your iPhone).
If these improvements have resolved any issues you had, an updated review would mean a lot.
Seconds Interval Timer version 3.23
Updated At: 2025-08-26
Changes: Aug 26, 2025
Version 3.23
SDK Updates
Seconds Interval Timer version 3.22.3
Updated At: 2023-03-20
Changes: Mar 20, 2023
Version 3.22.3
- Haptic feedback in iPhone app now stronger with different feedback at end of timers.
- Added option to disable pre-timer ducking
- Fixed default voice selecting voice for blind users that Apple recently added.
- Fixed audio not reducing for intervals that have the option enabled.
- Fixed text to speech with warning last interval speech.
- Fixed audio ducking when exiting a timer
Seconds Interval Timer version 3.21.8
Updated At: 2022-06-19
Changes: Jun 19, 2022 Version 3.21.8
iPhone / iPad changes:
- Timer list search
- Timer list sorting
- Deleted timers are moved to trash and can be recovered
- Publish to intervaltimer.com (and unpublish them)
- Convert timer into a custom timer
- Convert selected timers to compound timer
Apple Watch changes:
- Improved syncing
- Tapping info bar displays timer options (Discard, end, lock)
- Sort options from iPhone now used
Seconds Interval Timer version 3.20
Updated At: 2021-02-20
Changes: Feb 20, 2021 Version 3.20
• Added countdown screen for external displays
• Added custom message for half-way alerts
Seconds Interval Timer version 3.19.3
Updated At: 2021-01-11
Changes: Jan 11, 2021 Version 3.19.3
• Improved Apple Watch data syncing.
• Increased size of text in external display.
• Disabled audio ducking for timers that use cadence option.
• Fixed crash in media picker.
• Fixed color customisation fields.
Seconds Interval Timer version 3.19.2
Updated At: 2020-12-07
Changes: Dec 7, 2020 Version 3.19.2
Improved Apple Watch data syncing.
Removed automatic timer creation from clipboard.
Added CSV import for custom timers.
Seconds Interval Timer version 3.19.1
Updated At: 2020-11-07
Changes: Nov 7, 2020 Version 3.19.1
Improved Apple Watch data syncing.
Removed automatic timer creation from clipboard.
Added CSV import for custom timers.
Seconds Interval Timer version 3.18
Updated At: 2019-12-06
Changes: Dec 6, 2019 Version 3.18
Added option to share a device link - that can be used to launch Seconds from other apps - by swiping right on a timer in the list.
Fixed timer on external displays.
Disclaimer
Official App Store Link
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