Please note: Tempi is currently offered for free, but for a limited time only.

Tempi measures you and your entire band’s tempo live, while you play, and lets you analyze the performance when you’re done. It's like a reverse metronome.

* Tempi listens while you (or your entire band) play.
* Tempi reports the BPM (beats per minute) of your performance in real time with remarkable accuracy.
* When you’re done, Tempi lets you analyze the recording so that problem areas can be pinpointed and improved.
* Use Tap for Tempo to quickly get a BPM reading at any time.
* Switch themes for easy nighttime use or just to suit your style.
* Export the audio recording of your performance to keep or share with others.


In a band setting, place the iPhone or iPad in a position where the entire band can see it so everyone will know when the band is speeding up or slowing down. When you’re done playing the song, press the stop button to analyze the performance. You can scroll through the entire song, isolate where the tempo sped up or slowed down, and play back the song to get an idea of what went wrong.

Tempi is great for individual practice too. Use it instead of a metronome while practicing to pinpoint problem areas in a piece of music that you’re learning. If you can play through an entire song with the tempo only changing by 1 or 2 BPMs, you’ve arrived :-)

Tempi works best when there’s a distinct “pulse” to the song, like a kick drum/snare or a repeating chord, and assumes the player is trying to play at a consistent tempo. With less structured music it still does quite well but may occasionally report incorrect tempos.

What’s New

Version 1.4

Tempi is now free for a limited time!

Download the world's best beat detection app now, for free! This promo is good for a limited time only so grab it while you can.

Ratings and Reviews

4.7 out of 5
97 Ratings

97 Ratings

CNS456 ,

Great for classical music

I play piano, and I freely admit that my taste runs towards the melodramatic. Think lots of Rachmaninoff, with lots of rubato which may or may not be in the best of taste! Between the rubato and the frequent tempo changes Rachmaninoff likes to throw at you, it makes practicing with a metronome pretty difficult. Not only do you have to reset the metronome 3x a page in places, you also have to somehow get back with the metronome after a temporary slow down. So mostly I don't bother, but every now and again I wonder if I'm playing anywhere close to the marked tempo. This app takes care of all of that for you. You just do you, and it will let you know, ok, here you were at 120, then for 2 measures you were at 85, then back up to 140, etc. It was really quite enlightening, and so easy to use! I will definitely use this from now on.

IBinit4 fun ,

Tempi Beat Detector

Very nice product. I play guitar without a drummer (fingerpick and strum mostly) and it seems to be pretty accurate. As I tend to speed up during a performance, I suggest adding a visual bar across the screen that changes color if I slow down or speed up outside of a predetermined BPM. For example, if it is red I need to speed up, if green I am within an acceptable range of BPM, and if blue I need to slow down. That would be much easier and quicker to interpret if using at practice or on stage. I did suggest this as an improvement through the app's "Contact Us" link. If you like the idea, please let them know.

Dagons ,

Every Drummer should have this.

I use this live every night to make sure my tempos are right to match up with any sequenced phrases that I use during the night. Also, if anyone in the band says “you’re playing too fast” or “too slow” I can check to make sure my tempo is the same as it was the night before and the night before that.
If this were a standalone piece of hardware, with a count off feature, every drummer would buy it.


Made by Windmill, LLC
10.4 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. Unlock Trial Mode $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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