Seconds Interval Timer 4+

Tabata, HIIT, Circuit Training

Runloop Ltd

Designed for iPad

    • 4.7 • 21.5K Ratings
    • Free
    • Offers In-App Purchases


Train for success by crafting your perfect HIIT, Tabata or Circuit workout timer. Seconds Interval Timer is ideal for those that take their fitness seriously.

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.


- 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.


- Stopwatch highlights best and worst lap times.
- Countdown Timer with 5 preset durations (only first 3 on Apple Watch).


- 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.


- 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.

- 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.

What’s New

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

Ratings and Reviews

4.7 out of 5
21.5K Ratings

21.5K Ratings

Aimes93 ,

Love that it’s not a subscription!

Mostly i just love that this app lets me basically do whatever i want with it. I can easily create my own routine. But the five star rating is because I really love that they allow you to purchase the app for a one-time fee (which is actually very affordable). I basically rule out any app that is a subscription because if i like the app then i can’t imagine paying a subscription for it indefinitely. I like to have a simple app that i can own forever. I really hope they don’t take away the ability to purchase the app for a one time fee. Like i said, i genuinely stay away from subscriptions. I have shared this app with multiple people who have also purchased it because they loved that it was a one-time fee. Im also more willing to take a chance and pay a one-time fee on an app that i possibly wont use, than to sign up for a subscription based app.
If i was being super critical i might deduct a star because i don’t know why it doesn’t show my heart rate in the timer when i use it on my apple watch. The heart rate portion just shows “N/A”. Maybe my apple watch is old or something? I can’t figure it out. But i didn’t actually deduct a star because if i cared enough then i could try and contact the company for help, but i haven’t felt like it so that’s sorta on me.
All things considered, it’s a great app and i always suggest it to people who are looking for something like it!!

jonuorah ,

Super Versatile!

Amazing app! Extremely versatile. I had this one complex circuit, and I was like, “how am I gonna be able to do this with this app”. I was thinking it’d be long and tedious and not even perfectly correct. I thought I was right, but then I discovered the compound timer and the ability to copy and past exercises!!! Just when I thought I’d reached the limit with this app, I discovered an awesome functionality that makes things sooo much easier. It’s such a cheap price to get the whole thing unlocked considering how amazingly versatile and easy to use this app is. Sooooo worth it. The only little issue I have with it is that sometimes the timer sound glitches. So for example, like sometimes when the time for rest is down to just 3 secs, it does the 3 second countdown (which is great cause it acts as a warning and gets you ready), but sometimes it’ll start glitching out so there might be one beep then no more until the times up then you get one irky prolonged beep. It’s just a minor issue that only happens sometimes with me, but it just throws me off a little in my workout. Of course, that’s just me. Other than that, Amazing app!!!! Totally recommend!

Brittnay729 ,

Does a great job

Overal I am very happy with this app. It is a nice, simple interval timer, I have used it to make workouts for running, strength training, and others. It is a one time fee, as opposed to a monthly fee like the others, seriously being able to actually own an app for once is nice! Customizing each move is nice, and you have helpful options such as splitting the move for each side (such as lunging on the right then on the left) and having a break in between each side. I also love the different options for signaling the next move, although to me they are all kind of annoying except for the single beep. But you can have it tell you what move it is with an ai voice if you want.
It is a little hard to figure out at first. You can’t add a move in in between two others, you can only copy and paste. So I just have to copy something and paste it in and edit it to what I want it to say. Also if you just hit paste , it goes to the bottom. If you want it after a certain move, you have to long press it then paste. It copies whatever is selected, so if you forget to unselect something, it pastes it too. The thing I really would like to have changed though, is the ability to change multiple things at once. I would love it if I could select several moves and change the color for all of them, or the time for all, instead of one at a time. Other than that, I think this app is fine, just takes some practice.

App Privacy

The developer, Runloop 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 Not Linked to You

The following data may be collected but it is not linked to your identity:

  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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