Amp captures: Neural Amp Modeler community models (GPL v3).
In Guitar Pro: File → Export → MusicXML. Bars, tempo, rhythm and techniques are kept. Export the audio too (MP3 or WAV) and it plays in sync.
Upload the track and type the chords per bar, separated by |. Example: Gm7 | Cm7 | Dm7 D7 | Gm7*3 G5 (*3 means three beats). The app finds where bar 1 starts by itself.
Upload a recording of a lick or a solo and the app pulls out the notes one by one and plays them in sync. Works best with solo guitar, one note at a time. An .mp4 video works too.
Paste a text tab (lines like e|--5--7--|) or upload a .txt. Understands h, p, /, \, b and ~.
string:fret. For example 2:11 is string 2 (B), fret 11. String 1 is the high E./2:11 slides in. 1:11b is a whole-step bend. 3:10~ has vibrato.*3 holds the note for three steps (6:8~*3). - is a rest (-*2 is two).1:10p is a pull-off from the previous note and 2:8h a hammer-on.+ joins notes that ring together: 3:7+2:8*2.