HeavySet Logo
The smart workout log for strength training at the gym.

Download on the App Store

Seconds Pro - Interval Timer

Seconds is an extremely popular, and highly versatile interval timer app for High Intensity Interval Training (HIIT), Tabata and circuit training workouts.

Download Seconds for free on iOS or Android and try all it's features. A one time in-app purchase for the Seconds Pro upgrade will allow you to save your timers rather than recreating them each time.

Download Seconds Interval Timer on the App Store Download Seconds Interval Timer on Google Play

Templates for HIIT, Tabata and circuit training

Seconds comes with templates for common interval programming allowing to build advanced timers in a matter of moments.

If the templates do not fit your needs you can use the custom timer to build your timer one interval at a time. You can even combine and loop through many timers using the compound timer.

Speaks your interval names

Often when working out you just want to keep your phone in your pocket and get on with it. But if you are doing a circuit involving many intervals how do you remember what's next?

Seconds will speak your interval names, so this is never a problem. There is even an option to let you know what the next interval is so you have time to prepare before it starts.

Soothing alerts

If you are looking for a mediation or yoga timer text-to-speech or high pitch beeps may not be appropriate. For situations like these Seconds comes with more soothing alerts such as bells and gongs, or you may wish to have no alert sounds at all, or just a vibration. All these options are available.

Music the way you like it

Seconds provides plenty of options for how you listen to your music while you workout. A few options include:

  • Assign songs to intervals
  • Play a playlist throughout a set
  • No music during your breaks
  • Shuffled album throughout the entire timer

Of course, if none of those suit you, you can simply listen to your favourite music player in the background and Seconds will play it's alerts over the top.

Import and export your timers

Importing and exporting timers from Seconds Pro could not be simpler. Just select the timers you wish to share and hit Export. Timers can be sent via email or AirDrop (on iOS devices).

Timers can even be shared with friends that don't have the app via the web sharing function. Once shared, an online timer will be created for anyone to use on any device.

Runs in foreground or background.

Seconds Interval Timer will continue to alert you of interval changes whether in the background or the foreground.

Color code your intervals

Colored intervals are great when you just need a visual clue to see which interval you are on and what is coming up next. Seconds displays the the whole screen in the current intervals color, apart from the next interval which uses it's own color.

Seconds has 10 colors to choose from with an advanced option to customize the colors if you wish.

Vertical and horizontal timer display

Seconds utilises all the available width for the main timer display so it's easy to read at a glance. By default it displays the interval time remaining, but can be configured to show total time remaining, or elapsed times.

Recent Customer Reviews

Very well designed

I use this app for every workout. I love being able to see my improvements over time on the app. If I could give one suggestion it would be to have a notes section where you can record intricate details that you just can’t program into the app


App Support button not working

All good now! Thanks


I use it everyday

I’ve been using this app for a few months and I LOVE IT! Great app!


Perfect for creating circuit timers

I use this app for my timers for all of my workouts. I do two different core workouts one on odd days the other on even, a stretching routine, a cardio workout and a strength circuit. After programming the timers I just start my music, start the timer and go, much better than the stop watch. I can even share timers with friends. Great app, just what I needed.


Start button

It's good to have in the edit section 👍🏼👍🏼


Love this app!

It does pretty much exactly what I need. Import/export allowed me to move from another program without losing any history. Awesome. I also love that I could just buy it. I refuse to do subscriptions.


Still my go to timer

I used this all the time when I owned the gym.
Having sold up and retired from training others, it’s still my go to timer for all things training.
Heartily recommend this to any one who trains, either clients or themselves.


Worth every penny

I don’t often purchase apps. But this is worth every penny. Easy to use, very flexible and the voice commands makes it so easy when exercising. Can not recommend it highly enough.


No nonsense weight lifting logger

No subscription fees and you can export your data via CSV. Interface optimized for use during workouts. Gets out of your way so you can focus on the workout.


Good for 60 minutes actually not two hrs.

60 minute cardio extreme from P90X workouts that u can look at there workout sheet and type it in the seconds pro.


Great app

I transfer my exercise plan onto Seconds and connect my iPhone via Bluetooth headset for hands-free/eyes-free training.


Love it!

Been using this app for a few years. It’s highly customisable and easy to use. Just love it!