Tempi – Live Beat Detection 4+

“Like a reverse metronome!‪”‬

Made by Windmill, LLC

    • 4.9 • 13 Ratings
    • $7.99


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 Click 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 your Mac 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.

Ratings and Reviews

4.9 out of 5
13 Ratings

13 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.

Drumbum77 ,

Great app! A coupla suggestions..

I am a pro drummer and have used this app in performance quite a bit. It is a great safety net and really helps to me to feel solid in a very natural way. My time feels much more consistent and confident after when I remove it from the equation as well! I have a few minor suggestions, but bravo on what has become one of my most efficient tools! I only have a couple minor suggestions.

I love that it records, but it would be great to have the option to not record. Recording drains the battery very quickly, thus making it unusable for longer recordings if you cannot plug in your device.

Also, it would be amazing to be able to minimize the app while being able to use another app simultaneously. ie. sheet music app, fourscore, etc.

I recommend it to my students and colleagues. People are always amazed and wonder why they have never heard of it! As is, it is still incredible and I will continue to utilize and recommend it to anyone that may benefit. Thank you for the wonderful tool!

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.

App Privacy

The developer, Made by Windmill, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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