FlexChords generates guitar chord charts for virtually any song. Paste a YouTube link or upload an audio file and it detects the chords, key and tempo, then presents a synced chord chart that scrolls with the music as it plays. Charts can be transposed into easier keys, which makes awkward songs approachable for intermediate players.
The service is designed for both practice and performance: an interactive timeline shows exactly where each chord lands, and MIDI or chord-sheet export supports offline use. FlexChords runs in the browser and offers a free tier for everyday playing, with no instrument-side setup required.
