hi ksaj, frettr has that feature- it's just denoted as "tune up 1/2 step" because the chords are tuned up in the recognition process. I'll change it to "tune down 1/2 step" though because I see how it's confusing. I'm a big SRV and Hendrix guy, so I couldn't forget to add this in development though. thx for the feedback! -grudnyai22
frettr allows you to select a YouTube video of any song and then shows the chords played in the song as the video plays. frettr also has full playback functionality, so you can slow down songs to learn them more throughly, as well as capo and transposition options additionally.