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Seconds Pro - Interval Timer for HIIT & Tabata

By Runloop Ltd

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LOOK NO FURTHER, you have just found the most advanced interval timer on the App Store. Seconds has been downloaded over 3 million downloads, and has over 8000 5-star reviews. Other interval timers don't even come close when it comes to quality, features and ease of use. Now with Apple Watch support.


• Apple Watch
• Large clear display
• Templates for HIIT, Tabata, Circuit Training and more
• Custom timers to create any intervals imaginable
• Runs in the background
• Speaks your interval names in your language
• Coordinate music with intervals
• Bluetooth heart rate sensor support
• Universal app, works on all devices
• External display and AirPlay Mirroring support
• Apple Watch


Seconds comes with an Apple Watch app that allows you to use your saved interval timers on your Apple Watch without your iPhone present. It also comes with a Quick Timer editor allowing you to easily and quickly create one-off timers while you are on the go.

The timing screen has a full width time display, in portrait or landscape mode, that can easily be read from a distance. The current and next intervals are displayed so you can see also what's up now and next. The entire background uses the current interval colour.

Seconds comes with interval timer templates for HIIT, Tabata and Circuit Training making it very easy to quickly create a timer for your workouts. You can create completely custom timers one interval at a time, or even combine interval timers together to create compound timers.

Seconds supports Bluetooth heart rate sensors and allows you to configure the display to show your current heart rate and estimated calories burned during your training session. (Fitbit not supported)

The text to speech option will speak your interval names with an option for advance warning. Alternatively, you can choose from the built in alerts. These ranges from simple beeps, to MMA air horns and boxing bells, to bells and gongs for more relaxing timers.

Seconds allows you to match the intensity of your music to the intensity of your workout. For each interval, you can select a song, album, artist, genre, playlist, podcasts or audiobooks. If this is not to your taste you can simply play another music source in the background.

Share the interval timers you’ve created or completed with your friends on your Twitter, Facebook or Weibo. They will then be able to import your interval timer into their app.

Transfer all your timers to another device of yours or a friends easily via Email or AirDrop.

Use AirPlay Mirroring to display your interval timer on a big screen. Perfect for personal trainers and fitness class instructors. Enable Privacy Mode so your personal or client timers are not displayed as you navigate the app.

Want an interval timer for the 7 minute workout, or Tabata. Seconds comes with these preinstalled as well as samples of the other timer types.

Seconds has been built from the ground up to support iOS 8 and work on all screen resolutions. You can run it in the foreground and disable the Auto-Lock, or run it in the background and have it play your alerts and send notifications when your intervals are complete.

Apple Health data is used to calculate calorie expenditure. Workouts or mindful sessions can be saved to Apple Health.

What's New in Version 3.3.1

Bug fixes and performance improvements.

• Apple Watch

Full release notes available at:

Help keep updates free by updating your rating after app updates. I can only provide free updates as long as the app attracts new users. A solid rating is the best way to appeal to new users. Apple resets the rating after each update which is why this is so important.

Finally, I apologize for the rapid successive updates. However, this one couldn't wait as the heart rate wasn't updating on the Apple Watch app. You can help avoid situations like this by becoming a beta tester. I'm always looking for more. You can sign up in the app in the Support & Feedback section or by visiting the link below:


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Customer Reviews

Awesome app for fitness classes!

I've been using Seconds Pro for at least 5 years with Fitness Devolution group fitness classes. I like it because it allows me to coach individuals, correct form, or demonstrate without have to worry about the time, or reps or what we are doing. It also provides a consistent workout so my students can pace themselves and gauge their progress. I use it 3-5 times a week for 1.5 hours sessions and it has never let me down. Most of my students have bought the app to run my workouts at home.

I have about 30 workouts I've made ranging from 10-35 minutes long. They are easy to edit, or skip/repeat a section and the audio ducking tool works good when play music and the app at the same time. Highly recommended!


I love the new interface. It's fantastic. I've been using this to do my workouts for a couple of years now and I've always loved it. I love it even more now. If you are finding that it crashes immediately upon opening it up, delete it from your iPhone and then reinstall it. That whole process took around 15 seconds. Worked like a charm for me.

I should also mention that the developer super responsive. I keep making great update. I use this app every single day.

Update from 2017. I'm still loving the app. I use it every single day, multiple times a day. I've recommended it to several people and they have said the same thing. Totally worth it. Thank you!

Best Interval Timer

I have tried multiple interval timers during my workouts and this one is by far the best. It's easy to use and the change in color with the large text makes it easy to read the display even if your phone is propped up on the ground. If you have an Apple Watch then it has that covered too!

Seconds Pro - Interval Timer for HIIT & Tabata
View in iTunes
This app is designed for both iPhone and iPad
Offers Apple Watch App for iPhone
  • $4.99
  • Category: Health & Fitness
  • Updated:
  • Version: 3.3.1
  • Size: 29.5 MB
  • Apple Watch: Yes
  • Languages: English, French, German, Japanese, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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