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Seconds Pro Interval Timer

By Runloop Ltd

This app is only available on the App Store for iOS devices.


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
• Cadence beeps


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 3.5.1

Bug fixes and performance improvements.

- Fixed alerts not playing on round timer rounds (Apple Watch)
- Fixed crash on iOS 8 devices

This will be the last version that supports iOS 8.

Full release notes available at:


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Customer Reviews

Great app have Apple Watch wish

Love the app. I use it for running Foam Latex for the special Effects Industry in Hollywood. Does exactly what I want. I do have a wish list of some additional features. I would love to have the center notification be a stopwatch with 1/10 of sec. so I would have elapsed time in left, stopwatch in middle and remaining on right. To have a running “stopwatch” with lap in center would make this perfect. Also for the Apple Watch, please make the lower left an elapsed time Instead of heart rate. I am Not using this for exercise, although I might in future. I use it to run through multiple preset timers which I love. Just want the option to add elapsed time instead of heart rate. Developers, you’ve made almost the perfect timing app so please don’t limit it to JUST exercise. Thanks


I love this program. I mostly use the seconds timer so I customize workouts for my larger classes. The timer with the speech give me the freedom to let the people that know what they are doing to move forward with there workout without having to slow down the whole class for newbies, while at the same time giving me the freedom to work more one on one with new people to my class. The only thing I would Change about it is the voice, it would be nice if there were a voice option, meaning different voices, male, female, maybe even accents.

Could be great if it actually worked and wasn’t so buggy

Music player: have to reload playlist in settings before every workout. It may play a couple songs before it stops. Sometimes it will have 30-90 seconds of silence between tracks.

Heart rate integration: it randomly stops tracking or displaying it during workout

Ducking settings don’t do anything at all. Rarely can hear cues/prompts

Seconds Pro Interval Timer
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: 3.5.1
  • Size: 38.6 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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