The Fretuodle

The Fretuodle is a daily note naming game for string players. It comes from Catloaf Software, Inc., the company behind the Fretuoso fretboard trainer for phones, and it runs free in the browser at fretuodle.com. The puzzles are numbered from #1 on 14 October 2026.

Every day has one theme, usually a scale or mode. On 8 November 2026 it was "F Aeolian Pentatonic", after "E♭ major pentatonic" on 7 November and "C Major Bebop" the day before that. You choose guitar, bass or ukulele, and each instrument has its own set of questions built on that theme. The count changes too: the guitar and bass sets on 8 November had six questions each and the ukulele set the day before had eight. Before you start you can open a preview of the scale on the neck.

In play, a drawn neck shows a purple question mark on one string and fret. Below it sit buttons for the notes of the day's scale, and you press the one you think is marked. Each question takes one answer only. A timer runs from the first question, and results rank by score first and time second. On a phone the neck turns upright so you scroll up and down it, and on a desktop the number keys answer too.

The game keeps a streak and statistics for each instrument in your browser, with no account. You can share an official result or send a challenge link to a friend and compare runs. Past days open by date and play as practice runs that leave your stats alone. A learning library covers fretboard notes and hundreds of scale pages for each instrument, and the site can send one browser reminder when the new challenge goes live.

It suits guitarists, bassists and ukulele players who want a short daily drill on where the notes sit. It also fits learners working through scales. The screens come in nine languages.