BeatMirror: Track BPM3.0.0 - App Store

BeatMirror uses your device's built-in microphone to detect musical tempo in real-time. Just tap start and a graph of your tempo will appear right away, allowing you to scroll through your tempo history and see trends. Perfect for musicians looking to build their internal rhythm, or to see the tempo of their favorite songs in real-time!

TESTIMONIALS:
"BeatMirror truly is simplicity at its finest. That quality is missing from most apps who try to cram too many features into one app thus making it difficult to use and many times buggy. We feel like your app is VERY good. We're reviewing BeatMirror and it will be a part of the next show. It's got nothing but thumbs up!" - Phil Smith of "Drummer's Weekly Groovecast" (podcast)

"When I first heard about BeatMirror, I was kind of skeptical but after trying it out for weeks now and playing with it everyday, I'm mindblown. Alex really wanted to put a focus on helping drummers improve their internal clock and I really think he's done so." - Richard Ducat of "Drummers I Like" (podcast)

"Overall, this app is so quick and simple to use, there's not really an excuse as to why you wouldn't use it during practice sessions, just to see how you’re improving. If you're a drummer, having an app on your phone or tablet like BeatMirror just makes sense." - Laura Barnes of MI-PRO (mi-pro.co.uk)

FEATURES:
Good music needs good rhythm. But learning to stay on beat-learning to groove-isn't always easy. Build your inner metronome with BeatMirror and catch yourself when you're speeding up or slowing down. Here’s what BeatMirror has to offer:
- Wide tempo range. Tempo detection between 35 bpm and 220 bpm.
- Fast. Detects tempo quickly and accurately.
- Flexible. Accurate across time signatures (e.g., 4/4, 6/8) and rhythm styles (e.g., swing).
- Real-time, scrollable graph. Displays current tempo and tempo history in real-time.
- Zoom features. Choose tight, loose, or full zoom-or double-tap the graph for easy toggling.
- Easy sharing. Share your tempo graph with a tap.
- Easy-to-read interface. Optimized for various light environments, such as stages and practice spaces.
- Tempo keyboard. A special tempo keyboard (with tap pad) lets you set a target tempo easily and intuitively.
- Visual feedback. If you drift from your target tempo, BeatMirror shows a red (slow down!), blue (speed up!), or green (perfect!) indicator.
- Custom count-in. BeatMirror gives you an optional count-in before you start playing.
- Versatile. Perfect for solo practice, band rehearsals, recorded music, and you can even use it at concerts!
- Triplet mode. Boost accuracy in triplet-time with the new triplet mode.
- Tutorial. An in-app tutorial gets you up and running in a flash.

TIPS FOR BEST PERFORMANCE:
- Avoid handling your device during tempo measurement.
- Be mindful of competing noise near the device's microphone (e.g., conversation, typing).

NOTES ON USAGE:
- Recorded music. To detect the tempo of recorded music using BeatMirror, follow these steps:
1) Play a song from your favorite music player app using the device speaker (i.e., unplug your headphones). Or, play the song from a different device altogether.
2) Open BeatMirror and start tempo detection, adjusting the tempo range if needed.
3) The song's precise tempo will then be displayed in real-time.

Questions or feedback about BeatMirror? Please don't hesitate to get in touch anytime. Just tap the envelope icon in BeatMirror or reach out at tenkettles.com/contact. Happy practicing! -Alex

Version History We've got a big update for you today. It's been months in the making, and today we are very happy to announce BeatMirror's brand new Range mode!

It's the same BeatMirror you know and love, but now you have the option to set a nice big tempo range (instead of a target tempo) and start detecting tempo right away. The new Range mode also has a special triplet option for high accuracy in triplet-time. (You'll get a mini-walkthrough when you update the app.) Finally, we've added the ability to listen to whatever you like in your headphones during tempo detection (music from other apps, metronomes, etc.).

I hope you like the new update. And as always, I'd love to hear any feedback you have. Just tap the envelope icon in BeatMirror to get in touch and I'll get back to you ASAP. -Alex 3.0.0 04/15/2025 Hello! Three new features have come to BeatMirror:
• Zoom: Tap the zoom button (or double-tap the graph) to toggle between zoom options
• Share the Graph: Tap the camera icon to save or share your tempo graph
• Algorithm: Tap the hand/ear icon to try a different algorithm!
I'd love to hear what you think of the new changes (and if you have an algorithm preference). Get in touch anytime by tapping the envelope icon or emailing me at alex[at]tenkettles[dot]com. -Alex 2.6.0 10/17/2022 Say hello to the new tempo keyboard! Just tap the target tempo button (now with a much bigger tap area) and the new keyboard will pop-up. 

You can type in a tempo, tap it out, use the +/– nudge buttons, or even roll the dice for a random tempo. And, just like always, you can drag the target tempo button up or down too.

Big thanks to user Jon S. for the feedback on this.

Please don't hesitate to get in touch with any questions, comments, or feature requests—always happy to hear from you. -Alex (alex[at]tenkettles[dot]com) 2.5.0 09/12/2022 BeatMirror will now retain your target tempo between sessions, whichever way you select it (dragging the button, using the tap pad, etc.). Thanks, Arlene, for catching this!

If you have any questions, comments, or feedback, please feel free to get in touch any time at alex[at]tenkettles[dot]com—happy to hear from you. -Alex 2.4.2 06/09/2022 The target tempo button is now bigger! That means it's easier to drag up or down, easier to tap, and easier to see. As you select a new target tempo (whether by dragging the button or tapping on the tap pad) it will also be shown on the big tempo display for easy reading. 

Thanks, Tim and Dave, for the feedback on this! As always, please send your ideas, questions, and comments to me anytime at alex[at]tenkettles[dot]com. I love hearing from Beat Mirror users and I (almost always) respond by the next working day. -Alex 2.4.1 03/10/2022 Hello friends of Beat Mirror! Some big changes in this release:
• New target button. Drag your finger up or down on the new target button to change the target tempo at any time.
• "Pop-up" tap pad. Tap the new target button to reveal a new "pop-up" tap pad.
• Visual feedback. Speeding up, slowing down, or locked on? The graph can now let you know in big, bright colours—perfect for viewing at a distance.
• Real-time target change. Want to change the target in real-time? No problem. All the past tempo data will be reanalyzed using your new selection.
• Bigger graph. The old target tempo button is gone, making way for a much bigger graph.
• Upgraded graph. The target tempo now gets its very own highlighted gridline and label, with other gridlines ~5% away. Each gridline is marked with the number of bpm away from the target too (e.g., +8 bpm).
Questions, comments, or feature requests? I'd love to hear what you think of the new update. Get in touch anytime at alex[at]tenkettles[dot]com. I'll get back to you (almost always) by the next business day. -Alex 2.4.0 12/13/2021 You asked for it and here it is: a landscape view for iPhone! A couple more things too:
• New in-app tutorial gets you up and running in a flash
• More tempo history is now shown before auto-scrolling begins
Questions, comments, feedback? Get in touch anytime at alex[at]tenkettles[dot]com. Want to help support Beat Mirror? A review on the App Store is a big help for our little (independent) company. :) -Alex 2.3.0 03/15/2021 New in this update:
• Two more count-in options (12 beats, 16 beats)
• The count-in now counts up, rather than down: 1, 2, 3, 4…
• After some users reported a distracting lag, the tap pad sound effect has been disabled
Questions, comments, feedback? Get in touch anytime at alex[at]tenkettles[dot]com. -Alex 2.2.2 07/08/2019 Beat Mirror now supports music playback during tempo detection. Here's how it works:
• Start playing a song in your favorite music player app,
• Open Beat Mirror and set a rough target tempo by tapping along,
• Your song's precise tempo will then be displayed in real-time!
Questions, comments, or feature requests? Get in touch at alex[at]tenkettles[dot]com, happy to help. -Alex 2.2.1 09/28/2018 After months knee-deep in the mathiest of math, we're super happy to announce that Beat Mirror's tempo-detection algorithm has been rebuilt from the ground up—and it's a big step forward!

Beat Mirror now detects tempo for a huge variety of instruments and tracks. It's also much more stable and we think you'll be super pleased. Take it for a spin and see what you think.

As always, please don't hesitate to get in touch if you have any questions or comments about Beat Mirror. Just tap the envelope button in the app, or email us directly at alex[at]tenkettles[dot]com. And if you like what you see, a review would be pretty great too. :) Enjoy! -Alex 2.2.0 06/09/2018 Beat Mirror has been updated for the new iPhone X. And that's not all: you asked for a count-in feature and here it is! Select a 3, 4, 6, or 8 beat count-in (or none at all) and then start playing. There's also been a refresh of the design, because Beat Mirror shouldn't just work well—it should look good doing it! In addition to the count-in feature, here's what else we changed in V2.1:

• Tap pad: Added some animation magic and sound so that setting a target tempo looks and sounds good.
• Volume indicator: Replaced the "empty tube" look with a new five-segment indicator. Big improvement.

As always, if you have any feedback for us at all, just drop me at email at alex[at]tenkettles[dot]com. And if you like where we're going with Beat Mirror, please consider leaving us a rating or review. It's a huge help! -Alex 2.1.1 11/06/2017 You asked for a count-in feature and here it is! Select a 3, 4, 6, or 8 beat count-in (or none at all) and then start playing. There's also been a refresh of the design, because Beat Mirror shouldn't just work well—it should look good doing it! In addition to the count-in feature, here's what else we changed:

• Tap pad: Added some animation magic and sound so that setting a target tempo looks and sounds good.
• Volume indicator: Replaced the "empty tube" look with a new five-segment indicator. Big improvement.
• Optimized for iPhone X: The X is coming, and we want to make sure that Beat Mirror is ready to take advantage of that big screen!

As always, if you have any feedback for us at all, just drop me at email at alex[at]tenkettles[dot]com. And if you like where we're going with Beat Mirror, please consider leaving us a rating or review. It's a huge help! -Alex 2.1.0 10/01/2017 Hope you're liking Beat Mirror's new tempo graph! This update is just a minor one (some design tweaks), but we've been listening keenly to your feedback and have some very cool stuff in the pipeline for the next big update.

Got some feedback for us? We're all ears! Get in touch at alex[at]tenkettles[dot]com. Enjoying BeatMirror? Please review us on the App Store. Here's how: open up Beat Mirror, hit the big Target Tempo button, and then tap the Star button at the top of the screen. (I just reviewed one of my favourite apps while writing this, and it took just 71 seconds from start to finish!)

Happy practicing,

-Alex 2.0.1 08/24/2017 Version 2.0 introduces a scrollable graph of your tempo, plus support for background audio. 2.0.0 08/02/2017 1.0.0 06/12/2017