Maestro Pro
What the Free plan includes
On the Free plan you can keep up to three scores and view the sheet music for each. You can open lyrics files, play along with your own audio files, connect your own GitHub repositories and add tracks from them, and make scales and arpeggios in any key.
The built-in synth instruments play the score, but nothing follows along on the page: there is no note highlighting, bar highlighting or moving line until Performer. Nothing that needs the internet is included, and there is no equaliser, key changes or other tools.