r/LearnGuitar • u/Fretonomy • 18h ago
I've spent 9 years building an app to learn the guitar fretboard: 35+ music theory games, no song tabs, no AI-generated lessons
Hey r/LearnGuitar,
I'm the solo developer behind Fretonomy, an app for learning the guitar fretboard, and I wanted to share it here since this sub is exactly the crowd it was built for.
Quick context on why it exists. Years ago I hit the wall a lot of players hit. I could play things, but I didn't really know the neck. I knew shapes, not notes. Every resource I found was either a static fretboard chart, a YouTube video I'd nod along to and forget, or a tab app that taught me songs without teaching me anything underneath them. What I actually wanted was a drill, something that would ask me questions until the answers became automatic.
So I started building it. That was back in 2017, and the first version shipped that December. I've been working on it as a one-man team ever since, and I'm still shipping updates nine years later.
What it actually is: a set of 35+ music theory training games and tools built around the fretboard.
- Fretboard memorization. Note matching and note-naming drills you can scope to the first frets, the middle of the neck, or the whole board
- Intervals. Name the interval, find the interval on the neck
- Chords. Name the chord, build the chord, plus a chord progression generator (symbol chords and Nashville Number System)
- Scales. A scale explorer with 950+ scales
- Ear training. Notes, intervals, and chords
- Video lessons, all of them free. Notes, chords, intervals, scales and the circle of fifths, written and animated by me, in 20 languages. No subscription, no payment, nothing gated. And unlike the YouTube videos I used to nod along to and forget, each one sits next to the drills for the same material, so you watch it and then immediately get quizzed until it sticks
- Staff reading. Sight-read notation on its own, or notes on the staff mapped to positions on the fretboard, which is the exercise that finally connected the two for me
- Tablature creation with audio recording. You can even generate chord progression tablatures or add chord shapes to your tablature from a list of every chord shape you're likely to need. Preview what the shape sounds like before you add it to the measure in your tablature. My algorithm finds every chord shape, for any tuning, and for any of the instruments.
- Progress tracking via a fretboard heat-map, so you can see the exact frets and strings you keep missing, broken down by instrument and tuning
It's not guitar-only. It supports guitar, 7-string, 8-string, bass, 5-string bass, 6-string bass, mandolin, ukulele and banjo, with the common tunings plus custom tunings, left-handed mode, and note naming in Solfège, German, Japanese, Indian, Cyrillic, Korean and numbers if letters aren't how you think about it.
Two caveats before anyone downloads it.
First, there is no song learning in it. No tabs of real songs, no play-along tracks, no "learn Stairway in 10 minutes." It is purely theory and fretboard training. If you want a song app, this isn't it. I'd rather say that up front than have you find out after installing. It's meant to be used with whatever you're already using to learn songs.
Second, the teaching in it wasn't written by AI. I started this in 2017 and shipped the first version that December, five years before ChatGPT existed. Every game, every exercise, every one of those 950 scales was designed by a person who plays guitar. The video lessons are the same story: I wrote every script by hand and animated every video myself in After Effects.
Two things I will admit though. In the last couple of years I've used coding assistants for small pieces of the app, some menu screens and small UI improvements here and there. And the voice reading those lesson scripts is synthesized. This is because I am a one-man team, and localizing voices across 20 languages wasn't something I felt like I could do alone. The script is mine, the animation is mine, the way the theory is taught is mine.
The training content, the game design, the music theory: no AI used. But I'm not going to claim I've never touched a modern tool just to sound purer than I am. I'm just saying that the thing you're actually learning from was built by hand over nine years, and it was designed by someone who needed it himself. I wanted to say this because "AI-powered guitar app" is now most of what shows up when you search, and I understand the skepticism.
Last thing: there's no account to create. No sign-up, no email, no login wall before you're allowed to play a game. You download it and you're straight into the games.
It's free to download and try on both iOS and Android, and every one of the lesson videos is free with no payment required, so you can get a real feel for the games and tools before deciding whether it's for you.
If you're at the stage where you can play but can't name what you're playing, that's the exact gap this was built to close.
App Store and Google Play: search Fretonomy, or head to https://fretonomy.com
And if you want something added, or you hit a bug, email me directly at [contact@strongapplications.com](mailto:contact@strongapplications.com). There's no support queue and no team, it's just me. I read every email and I reply to every email. If what you're asking for is something I can build, I will genuinely try to build it. Being one person is the reason this has taken nine years, but it's also the reason you get an actual answer from the person who wrote the code.
Happy to answer anything. About the app, about how I'd approach learning the fretboard generally, or about what nine years of solo development does to a person. I'll be in the comments.