Work out to your music.

Go to the App Store on iTunes

MC-Timer plays music for timed intervals

You can use this app to have some fun during workout sessions like Tabata, intervals, HIIT, the 7-minute workout, or circuit training, where you have multiple timed sets of high-intensity exercise and rest phases. For more complex routines, the names of your exercises can be shown and randomized. MC-Timer will guide you through your planned workout by playing music during the high-effort exercise phases and by being quiet during the pauses.

No need to constantly look at your watch.

Just listen to the music.

Your music.

Making Progress

While the workout is playing, you can see your progress within each set and within the entire session by looking at the progress rings and the countdown timers. The progress rings are distinct and remain legible even from the other side of the room. To make this possible, the display will stay on while MC-Timer is playing your session.

Feel free to pause your workout at any time.

You can easily skip forwards or backwards in your list of sets. Independently from that, you can also skip between items in your music playlist.

An example with short demo-values: 10 repeats of 16 seconds of music, interspersed with 6-second pauses. (In the app you can choose your own values.)

The inner ring shows the progress in the current phase, alternating between playing music and being quiet. The outer ring represents the entire session.

The small number in parentheses shows the duration of the next phase. All timers can be changed to count up instead of down. (You need JavaScript to see the animation.)

Play Your Music

Use an existing playlist or create a new one with songs from Apple Music or your (iTunes) music library.

Skip the Intro

MC-Timer can play a section from the middle of each song.

Start/Stop Sounds

Use countdown beeps and/or one of 62 different sounds.

MC-Timer iPhone welcome screenshot lightMC-Timer iPhone X mask

Enjoy Listening to Your Music While You Work Out

When the work phases are shorter than the typical duration of a song, then you can nicely play a new song for each set.

Let yourself be surprised and allow MC-Timer to play a randomly chosen song for each set. And if you do not want to listen to mellow song intros, you can set MC-Timer to play a suitably long section from the "heart" of the song.

Not in the mood for this song? Skip to the next one!

Does the exercise time exceed the song duration? MC-Timer will continue the set by playing the next song in your playlist.

Multiple Devices

MC-Timer synchronizes the workout definitions across your devices (1). If you like to use a bigger screen, play the workouts using MC-Timer directly on iPad or Apple TV.

MC-Timer on the Apple TV

You can easily playback your workout sessions directly on Apple TV by using the MC-Timer app for Apple TV. However, you cannot edit the sessions there; you need to do that on your iPhone or iPad and sync your changes via iCloud (1). Also note that since your (iTunes) media library is not available on Apple TV, you will need an Apple Music subscription in order to play music.

(1) For iCloud sync to work, you need to be signed in using the same iCloud account on all of your devices.


Adjust the workout timing to your needs.

Randomized Playback

Shuffles the songs in your playlist.

Apple TV

Playback your workout on the big screen.

MC-Timer Apple TV screenshot of
the welcome screen
MC-Timer Apple TV screenshot during
playback of the ninth music step

Simple Set-up

The workout details are fully customizable. You can, but you don't have to:

  • define any number of repeated sets of "music" and "pause" phases;
  • insert special sets without music to create longer pauses;
  • create a longer start delay in the same way: set "0" seconds "music", and however many seconds "pause".
  • reorder the sets as you see fit;
  • define a list of exercise names to be shown;
  • choose all the songs that will be played;
  • use the playlist as is or randomize it;
  • select whether you want to skip to the next song for each set;
  • play tracks from the beginning or from the middle.

Play Your Music

You can use any combination of these options to define your playlist:

  • select a curated Apple Music playlist (2);
  • pick individual songs from Apple Music (2);
  • use a playlist from your (iTunes) music library (3);
  • pick individual songs from your music library (3);
  • or, if you wish, you can turn off music playback.
(2) Requires a subscription to Apple Music. You can sign up from within MC-Timer.
(3) Not accessible for playback on Apple TV.


  • Optionally, use countdown beeps or just a single warning beep;
  • pick a fun alert sound to play at the start of each music phase;
  • select from 62 custom sounds: bells, horns, special effects, Science Fiction and cute animals;
  • pick a different alert sound to play at the end of each music phase;
  • pick a third alert sound to play at the very end of the session;
  • use a random alert sound for any of these three;
  • decide not to use any alert sounds.

New: Exercise List

Optionally, you can:

  • define a list of exercise names that will be shown during playback;
  • use the list as is or in a randomized order.

Geeky Details

  • Each set consists of a "music" phase and a "pause" phase, optionally repeated multiple times.
  • Music and pause times are entered in seconds.
  • Unless you defined a specific start delay, your session will start with a 5-second countdown step.
  • A complete session always ends at its last music phase, i.e. the very last pause is skipped.
  • When you mark a workout as a favourite, it will be listed at the top of the list.
  • MC-Timer accurately times your workout; unlike other apps, there are no timing errors that accumulate as the session progresses.
  • The counters/timers in the playback view can be tapped to toggle between counting up or down.
  • The shuffle mode randomises the order in which songs are played. That is to say: songs will not be repeated until all songs in the playlist have been played.
  • You can adjust the volume of the beep and alert sounds relative to the volume of the music.
  • You can override the default system-wide appearance and always use the app in its dark or light appearance.

Skip to Next

If you want, each new set can play a new song.

Accurate Timing

No accumulated timing errors.

Dark Appearance

Use MC-Timer in light or dark appearance.


MC-Timer, the "Musical Circuits Timer", was developed for use in gym circuit trainings in general, and for Järfälla OK's "gympa" evenings in particular. The use of music has made these sessions a lot more enjoyable, but alas, they still hurt.

Medical Advice

Please consult with a physician prior to engaging in a new exercise program; even more so if this is not something that you are used to.

No Tracking

No embedded analytics.
No gamification.
No "social" networks.

No Prompts

No interruptions. There are no rating requests.

No Ads

MC-Timer does not display ads.


iPhone, iPad and Apple TV $2.99
Version 1.6 (2068)
16 September 2023
Languages: English

iOS 14 or later.

Tested on iOS 14.4.1.

Go to the App Store on iTunes

No Hidden Costs

Also worth noting are:

  • no ads; this is not a free app;
  • no subscription pricing for the app;
  • no in-app purchases to unlock features;
  • no rating prompts;
  • no pestering about app reviews;
  • no collection of user information;
  • no embedded analytics;
  • no integration with "social" networks;
  • no addictive gamification;
  • no claims to find your lost keys.

Known Issues

  • You need music on your device or a subscription to Apple Music to be able to play music;
  • on Apple TV, only songs from Apple Music can be played (this is a platform limitation);
  • while you can use the music controls on the lock screen or in the notification centre to skip to the next song, you cannot use these to start or stop MC-Timer;
  • you cannot burn a lot of calories by reading this.

Latest News

Varsion 1.6 adds 8 new bells and effect sounds. Also shows the next exercise suggestion. Build for iOS 16.1 or later.

Version 1.5 adds 11 new Science Fiction sounds. The beep and alert volumes can be adjusted. Searching for items on Apple Music has been improved: you can tap on an item to play it; you can load more search results.

Version 1.4 can display exercise suggestions. Supports paired exercises: "Left/Right lunges". Includes 6 new sounds. Adds a single, 5-second warning beep.

Version 1.3 allows you to mark workouts as favourites and allows to define workouts without any music.

Version 1.2 adds a song preview player.

Version 1.1 adds countdown beeps.

Version 1.0 supports Apple Music and Apple TV.

Version 0.1 to 0.4 were tested in Järfälla OK's "gympa" sessions (running on iOS).

7-Min Workout

For the well-known 7-Minute Workout, create a session with:

  • 12 repeats,
  • 30 seconds music, and
  • 5 seconds pause.
Optionally, add these names as exercise suggestions:
  1. Jumping Jacks,
  2. Wall sit,
  3. Push-ups,
  4. Abdominal crunches,
  5. Step-up onto chair,
  6. Squats,
  7. Triceps dips on chair,
  8. Plank,
  9. High knees running in place,
  10. Lunges,
  11. Push-up and rotation,
  12. Side plank.
Select your music, then press play!