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Tired of all those chordfinder apps that just give you the standard results every app gives you? Fretter is the new kid on the block. And it's great. Ugly, but great!

We didn't sit behind our computers typing in all those chord diagrams, no we spent our time better. We came up with a way to give you lots of great correct diagrams, without needing us to do boring stuff: Fretter teaches your iPhone basic musictheory and with that knowledge it has the power to give you every possible diagram there is. Want to see how to play Cmaj7/F# on a Guitar with a Dropped D tuning? Fretter knows how to search for it! (We didn't try, but if it's possible to play, it will definitely show up. Yes, we're lazy. :) )

Still, Fretter is great. And it does awesome stuff like reverse chord lookup (for the creative geniuses among you), and you can also strum the diagrams to hear how they sound. Easy if you want to find the perfect sounding Dmaj9 or whatever strange chord you need!

So, what are you waiting for? Fretter!

For a more formal description, please continue reading.

Looking for ways to play all those chords on your guitar, banjo, ukulele or mandolin? Interested in a reverse lookup function? Fretter: the ultimate chordfinder!

Fretter doesn't rely on a database with diagrams, instead it calculates all the possible diagrams for a given chord/instrument/tuning combination. It's algorithm is optimized to only present to you the chords that you can actually play as a human.

Because Fretter is build this way, you can select any tuning and still have all the possible chords presented to you.

You can easily select a basic or advanced chord, optionally with added bassnote, and go to the diagrams. Each diagram has extra information about the chordnotes and the intervals used.

A very nice feature is the audio playback. You can hear how the chord variations sound so you can easily select which variant you like the most.

Also included is a reverse lookup option. Nice if you are a bit adventurous and you are coming up with your own chords on your instrument, but don't know how they are called. Fretter can help you here by providing you with the correct naming.

If you are looking for a chord reference app: this is what you need.

"Where this app stands out though, is not in its vast reference of chords; it is in it’s reverse look up option."
4/5 stars on AppAdvice.com

Feature list:
* Support for Guitar, 4,5-string Banjo, Ukulele, Mandolin, Lute, Bouzouki, 4-string Bass, Pipa
* 50+ chordtypes
* Tunings: 75+ predefined and custom.
* Added bassnote (C/D)
* Audio Playback
* Reverse lookup
* Chord Intervals
* Note Names

Please contact us by email if you experience a bug!

What’s New

Version 1.5.2

Added Lute, Bouzouki, 4-string Bass, Pipa
Add diagrams option for Reverse Chordfinder
Updated Tunings and ChordTypes
Fixed a few crashes
Improved Crash Reporting to include selected chord/instrument so errors can be reproduced.
Minor improvements to interface

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Bob@0712 ,

Best chord app out there!

This is my go-to chord finder app! I never use my old chord books any longer. The reverse chord finder is awesome. You get multiple voicing for each chord and also you can listen to how each sounds. I highly recommend this app for any level of guitarist.

SexyBree96 ,


This app has everything anyone would need and more. I do wish though that there was a way to save tunings and other settings that you use a lot. It would also be cool if there was a page with all the musical keys and the chords that belong to them and every setting you change, changes the chords relatively. That would make things way easier for me me. but this app is the best guitar chord app I've ever used. and to the guy they said it crashes, I've never had that problem, I think it's because you're using an iPhone 3G

Ryangapen ,

Just what I needed :)

I have been looking for an app like this and this one is perfect. I can tap the board to put in the cord I'm playing and it tells me the cord. As a bonus the look is pretty cool and I plan to copy and paste it onto my sheet music so it's easy to follow. I also like the fact that you can use different tunings and capo too!!! Pretty sweet.


Peter de Kraker
10.6 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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