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The smart workout log for strength training at the gym.

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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

Really useful

I've been using the free version to create HIIT timings as part of my leanin15 programme. It works really well and is great to have the correct timings all the time.

Lost 10 pounds using this timer!

I entered 7 tabata exercise programs to mix up aerobic and weight workouts every week. I lost 10 lbs thanks to this timer. Highly recommend it 👍🏻


It's great! It has timer styles for all types. Tabata, hiit, circuit etc. It plays your music if you want, has a halfway warning if you want. Does a 3 sec countdown. You can name the exercises and it'll say them out loud (I always add a swear or two in there for fun) - this is THE BEST timer app I've used. 100% recommend!

Best and most adaptable timer app

I have not found anything this app can't do. Fantastic.

Great workout app

I upgraded to the paid version b/c I couldn't save custom timers w/ the free version. I love the app. It doesn't matter if you are working out for yourself or teaching a class...this makes it easier. You can use standard timers or make custom timers, use text to speech, have audible alerts, etc...many nice features.

I create a workout and get lost in my workout; I let the alerts tell me the next exercise and just have fun. Love this app...

I use this for personal fitness and other things...like a cooking timer...and teaching karate classes. It's nice not to have to watch the clock.

Took a while

I have used a few apps, and 1 in particular, which covered DUP style of training and they did away with the settings of undulating which resulted in linear progression so I stopped using it. I found HeavySet... it took a few runs to get used to the app and you have to purchase the pro version to unlock all the features BUT it simply is the best app. It not only tracks linear but undulating progression as well. It tracks total volume and estimated 1RM. You can switch between KG or LBS during a workout (my gym has both weighted plates). The UI is clean, simple. It's just perfect.

Love it!

Simple to use, no glitches, and the colors are fun to play with. I can keep myself motivated and stay on track with this app. Just opening it makes me feel happy.

No problems

Works well. Never had problems. I use it for circuit training in my basement. Easy to configure timers to fit my workout needs.

Must get!

Best timer by far!!!!

Best Timer On iOS

There are plenty of timers available on iOS, unfortunately every other one I've installed this far has sucked. This timer allows you to fully customize the amount of time, reps, and sets. Moreover, there's a really cool feature: an audio narrator, which verbalizes the upcoming rep. Definitely worth the purchase if you want to customize your workouts!

UI redesign took this app from good to great

Updated 6/22/2017

Got back into exercising with HIIT and rediscovered this app and how perfect it is. Further UI updates and options (interval colors!) make this app worth much more than it's sold for.


I was already on board with this app but its previous design felt a little clunky and difficult to navigate. Now it's much simpler and easy to read and work with, and I feel like I've gotten even more value out of something I was already fairly satisfied with.

Love it

I use seconds to input custom workouts so I can just plug in my headphones and go off somewhere to workout. No worries about counting, timers, or needing access to internet/screens. It just tells me when my interval is up, what's coming next, and plays all my music while it does so.