# Seconds Interval Timer — Tabata, HIIT, Circuit Training

> Interval timer for Tabata, HIIT, circuit training, with stopwatch and countdown. (iPhone/iPad app by Runloop Ltd.)

- Source: https://appshunter.io/ios/app/seconds-interval-timer/id475816966 (this page in markdown: same URL + `.md`)
- Developer: [Runloop Ltd](https://appshunter.io/developer/325563420)
- Category: Health & Fitness, Utilities
- Price: Free with in-app purchases
- Rating: 4.70/5 from 23,504 App Store ratings · 1,200 written reviews indexed
- Age rating: 4+
- Requires: iOS 17 · 107 MB
- Languages: Russian, American English, European Spanish, German (Germany), European Portuguese, Chinese (Traditional, Taiwan), Chinese (Simplified, China), French (France), Swedish, Japanese
- Released: 2011-11-02
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews.md

## What is 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 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.

## Key features

- Full-screen colored display
- Templates for HIIT, Tabata, Circuit Training
- Voice and audio alerts
- Music assignment per interval
- Background operation
- Apple Health integration
- Stopwatch and countdown timer

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Advanced Version | $7.99 | one-time |


## What do users think of Seconds Interval Timer?

Overall sentiment: positive

**Pros**

- 🚀 Great workout app
- 👍 Customizable and user-friendly
- 🔒 Reliable and stable
- 💡 Versatile for various workouts
- 👍 Easy to create and edit timers
- 🚀 Helpful voice prompts and alerts
- 👍 Integrates well with music
- 👍 Saves and organizes workouts

**Cons**

- 🐛 Occasional audio issues
- 🔍 Limited Apple Watch integration
- 💰 Paid version required for full functionality
- 🕰️ Time-consuming to set up complex workouts

**Commonly reported bugs**

- Timer sometimes stops working unexpectedly
- Issues with restoring purchases on new devices

**Most requested features**

- Ability to change beep/alert volume independently
- Option to delay transition between intervals
- Sync workouts across devices
- More preset workout templates
- Heart rate monitoring integration

## Recent user reviews (10 of 1,200)

All indexed reviews: https://appshunter.io/ios/app/seconds-interval-timer/id475816966/reviews.md

### 5/5 — Great App for Fitness instructors!

*2026-08-26, version 3.24.2*

Love this app, my co-workers and I use it all the time, for a variety of different fitness classes and workouts. Love that you can copy and paste a workout to create a new one without starting over.

### 3/5 — Too many bugs/freezes

*2026-08-26, version 3.24.2*

I really like this app for programming the workout and classes I teach. However, on my Apple Watch, after I finish one class, I’m unable to go and pull up the next workout because it just spins and spins. I have to completely shut down my Apple Watch in order to get it to reset which is annoying.

### 1/5 — Please Fix Widget Issue

*2026-08-26, version 3.24.2*

Already paid for the app, but when click a preset timer from the lock screen widget, the app would open and direct to a screen page that says non-member can only use the timer set for once. Reclaim purchase and delete and recreate timers do not help, and there’s also no other way to reach out for feedback or assistance. So just leaving a review at here, and hopefully this issue will get addressed soon. Thank you!

### 4/5 — Awesome but one recommendation

*2026-08-24, version 3.24.2*

I love this app as a coach but I would love if there were different voices for the text to speech. Something more motivating than the Siri voice

### 5/5 — Super simple, easy to use - could use some flexibility in custom timers. still a 5/5

*2026-08-23, version 3.24.2*

This interval timer app works just as well as any physical timers if you’re a person that doesn’t mind running an app. Though even with some of the features lacking customizations to utilize in a custom timer. I’m still able to put together the timer I needed for my routine. If they gave the customization more flexibility instead of having to copy paste tediously and in addition to alternative music option for the audio… I’d give this app 10 stars if I could. foreals!

### 5/5 — Absolutely the best.. Great app

*2026-08-22, version 3.24.2*

If you know what routine you want to do, and the timings suited to you, then Seconds cannot be beaten. Setting it up is relatively simple, add your sounds and colours and get fit. I use it everyday varying the routines..

### 5/5 — Seconds keeps Focused

*2026-08-22, version 3.24.2*

I love this app.  The flexibility, ease of use, the fact that I can add my own music is awesome!

### 1/5 — Won’t import timers

*2026-08-20, version 3.24.2*

Have a friend that built timers in her app. She tried to share them and it won’t upload we have tried everything including me paying for this ridiculous subscription and nothing has worked.

### 5/5 — Top 5 fitness app

*2026-08-20, version 3.24.2*

Been using the app for over ten years. Love it!

### 4/5 — Best I’ve Found

*2026-08-19, version 3.24.2*

This is the best timer app that I found to build the sets that I am looking for. However, there are still two slightly annoying limitations. The widget it doesn’t work if you have your phone set to liquid glass. If you are doing long sets and want to do a better job color coding certain types of exercises then the color picker is limited. You can choose a few colors, but I don’t know why they don’t simply expose the system color picker.

## Frequently asked questions about Seconds Interval Timer

### What is Seconds Interval Timer used for?

Seconds Interval Timer is designed to be the best interval timer for workouts such as Tabata, HIIT, and Circuit Training. It offers a full-screen, colored display that is easy to read from a distance, and can be used in either landscape or portrait mode. The app also includes templates for different training styles and allows for combining timers for greater control.

### What are the key features of this interval timer?

Key features include a full-screen, colored display for easy readability, templates for HIIT, Tabata, and Circuit Training, and the ability to combine timers. It also offers voice prompts for interval names and upcoming alerts, as well as other sound alerts like beeps and bells. Users can assign music per interval or per timer and the timer runs in the background.

### How much does Seconds Interval Timer cost?

The app offers all its features to try for free. However, a one-time in-app purchase is required to use the timers you create more than one time. This purchase unlocks the full functionality for repeated use of custom timers.

### Can this app be used with Apple Health?

Yes, Seconds Interval Timer can integrate with Apple Health. It can save workouts or mindful sessions, read body measurements, and use your year of birth to calculate calorie expenditure, especially when used in conjunction with a heart rate monitor.

### What are the additional timers available in the app?

In addition to the interval timer, the app includes a stopwatch that highlights best and worst lap times. It also features a countdown timer with 5 preset durations, with the first three available on Apple Watch.

## Version history (last 5 releases)

### 3.24.2 — 2025-11-30

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.

### 3.24.1 — 2025-11-16

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 — 2025-11-03

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.

### 3.23 — 2025-08-26

SDK Updates

### 3.22.3 — 2023-03-20

- 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

## Apps similar to Seconds Interval Timer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Interval Timer - Tabata Timer](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568) | 4.5 (19,032) | Free | Health & Fitness |
| [Seconds Pro Interval Timer](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811) | 4.8 (11,936) | $7.99 | Health & Fitness |
| [Interval Timer □ HIIT Timer](https://appshunter.io/ios/app/interval-timer-hiit-timer/id1124297113) | 4.8 (85,854) | Free | Health & Fitness |
| [Interval Timer X Workout Timer](https://appshunter.io/ios/app/interval-timer-x-workout-timer/id1448144846) | 4.8 (686) | Free | Health & Fitness |
| [Tabata Timer: Interval Timer.](https://appshunter.io/ios/app/tabata-timer-interval-timer/id1255964203) | 4.9 (9,173) | Free | Health & Fitness |
| [Intervals Pro: HIIT Timer](https://appshunter.io/ios/app/intervals-pro-hiit-timer/id957586938) | 4.8 (13,511) | Free | Health & Fitness |

## More apps by Runloop Ltd

- [Stretch - A countdown timer for fitness, workout, egg, or anything really](https://appshunter.io/ios/app/stretch-a-countdown-timer-for-fitness-workout-egg-or-anything-really/id333281172)
- [Seconds Pro Interval Timer](https://appshunter.io/ios/app/seconds-pro-interval-timer/id363978811)
- [HeavySet - Gym Workout Log](https://appshunter.io/ios/app/heavyset-gym-workout-log/id1171500310)

All apps by Runloop Ltd: https://appshunter.io/developer/325563420

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*