Reverse Chord Finder Pro 4+

For guitar, piano, sheet music


Designed for iPhone

    • 4.7 • 464 Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


If you’ve ever asked “What chord am I playing?” Reverse Chord Finder Pro is for you! Just select two or more notes — using piano, stringed instruments, or music notation — and the app will show you the names of the chords that match.

“This app is simply awesome! It will accelerate your discovery of new chords in leaps and bounds and raise your level of playing to new heights.” — A Happy Customer

* Enter notes in 3 different modes: Piano/Keyboard, String Instruments (guitar, bass, ukulele, etc.), and Music Score
* Extensive chord database — more than 100 chord types!
* Hear chords played as block chords or arpeggios
* Find partial chord matches to isolate passing melody notes
* Use the Favorites list to bookmark chords you’ve identified
* See the same chord represented on different instruments or in musical notation

* Left-handed String Instrument support
* String Instrument options for 3 to 12 strings, plus capo
* Music Score mode supports treble and bass staff, and all 12 major and minor keys
* View major scale degrees for selected notes to learn chord construction
* Customize chord notation (CDEFGAB, CDEFGAH, Do-Re-Mi)

* Analyze and write down harmonies
* Recognize and construct chords more easily
* Improve your understanding of chord theory

“I can look up chords faster than with any other method. Worth much more than the current price.”

“With this app I can find out what the chords are ... No more embarrassment in front of the rest of the band!”

“A songwriter’s best friend!”

Questions or comments? Need some help?

Terms of use:

What’s New

Version 2024.4

Minor bug fixes

Ratings and Reviews

4.7 out of 5
464 Ratings

464 Ratings

Altitude Rocks ,

first ever second review?

I believe this is the first time I've ever been drawn to write a second review, but I have to do it: I love this app like a new puppy, or an unexpected vacation, or a run on a sunny day. If you are an aspiring musician, how can you not have this app?

This afternoon I'm tackling a tough piece of piano music, and I'm seeing its chord structure (in the left hand) easily and with clarity, thanks to this nifty little app. I used to have to leaf through a heavy book. But now I can learn much faster and with much less hassle.

If I could save only two of my apps from a burning computer, this is one of the two I'd lasso and pull to safety. And no, I don't work for the company. I merely love the company's delightful product. It's making me stronger every time I learn from it.

kurt ,

Older version was better

November 14 update: the developer has kept his word and updated the app to address my gripe. Thanks!


The older version was better. In the older version, when you pressed on the keys in keyboard piano, it would produce the note. When you press the second time it wouldn't as if to turn the note off. The new version makes it sound both times. This is very distracting. Hopefully the new developer will fix this. Otherwise, the app is perfect.

lkingston ,

I LOVE this app!!

I switched from piano to fingerstyle guitar as my main instrument a few years ago. I could always figure out what chord I was playing on piano, but on guitar, often I have no clue what I am doing. Now I know how to notate some of the stranger chords!

I especially like that you can do this with different tunings like Drop-D! Five stars all the way!!

App Privacy

The developer, Ghostdust, 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 Linked to You

The following data may be collected but it is not linked to your identity:

  • Purchases

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


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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