Never miss a beat with TrailMix on iOS


Price: Free
iPhone App Review by

Reviewed by Sara Clayton

Reviewed by Sara Clayton

Music has the potential to make or break a workout.

One minute, you might be jogging to the Rocky theme, about to set a personal record. But before you know it, your iPhone shuffles to a slower song like Eric Clapton’s “Tears in Heaven,” and throws you completely off-guard from your workout.

It’s a first-world exercise problem that drives many of us crazy. But instead of going through the trouble of skipping songs in frustration while exercising, give the TrailMix app a try first.

Concept and Functionality:

TrailMix, developed by Resonant Technologies, LLC, can configure a song’s tempo to match the pace at which you’re walking or running. It’s an innovative concept and one that we’re excited to have a chance to check out. Using a combination of tech for step-synchronization, beat analysis and tempo modulation, TrailMix detects and interprets body motion to speed up or slow down a song’s BPM, or beats per measure, without distorting the pitch of your music.

The app is fairly self-explanatory. On startup, you’re presented with a list of the playlists that are on your iPhone. If you haven’t created any playlists, you can either choose to play your whole song library or select the “Switch to Music App” option to create or edit playlists.

With the free version of TrailMix, you are limited to 20 songs per playlist. To avoid listening to the same songs over and over again, it is best to keep workout-themed playlists to 20 songs maximum or choose “All Music” for a diversified playlist.

TrailMix iPhone App Review

TrailMix iPhone App Review


What’s nice about TrailMix is that once you select a playlist, the app will automatically detect your movement and start matching a song’s tempo to your pace instantly. In addition to syncing music to movement, TrailMix also measures how many steps you take during your jog or workout, and displays these stats in a pop-up after you finish your workout.

For what it does, TrailMix is great. Having to change a song when you’re in the thick of your workout can be irritating and even disruptive, but TrailMix reduces the chances of this happening. The interface is plain and simple, and the buttons in the navigation are large enough that switching between songs and playlists during a run can be done hassle-free.

On the other hand, sometimes music that’s sped up or slowed down more than usual can sound a little strange – say Al Green at 112 BPM or Skrillex at 60 BPM. It’s not an issue with the app, but to get the most out of TrailMix, it is best to compile playlists with songs that are similar in tempo. In this way, you can avoid running into any awkward song juxtapositions.

For the best results on TrailMix, the iPhone should be attached to an armband or placed in a pocket. Though you can carry your iPhone in your hand, the tempo is likely to match the rate at which you’re swinging your hand instead of the movement of your body.


The free version of TrailMix offers just about all of the features you’d want from an app like this. Upgrading to TrailMix Pro will set you back five bucks but in return it will give you extra insight into the time you’ve spent moving as well as your average pace. With it you can also turn on “cruise control” and set a custom tempo instead of setting a tempo according to movement. All in all not a bad deal but a bit on the pricey side.

If you’re looking to change up your morning jog or walk, TrailMix caters a unique music experience that gives you control over your music and your pace.


TrailMix is compatible with with iPhone, iPod touch and iPad. Requires iOS 4.1 or later. This app is optimized for iPhone 5. A small expedite fee was paid to speed up the publication of this review.

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3 Responses to “Never miss a beat with TrailMix on iOS”

  1. Gabe says:

    TrailMix Pro is a good app (I’ve only used the Pro version) that does what it says on the tin. I recently wrote a review about it as well.

    One thing worth mentioning is that you can run TrailMix and another app like Runtastic or similar at the same time. So if you use Runtastic to keep track of your stats, you can use them both with no problems.

  2. System Fade says:

    I’m going to say right off the bat that music is essential to ANY workout. Of course, that’s my personal opinion, but when you got your jams on it you tend to push yourself further than normal. That being said, I love this concept. Beatmatching your music with your workout tempo … genius! I’m definitely going to check this out. Thanks for the post.

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