PDFs are pictures

Most music apps are built around PDFs - pictures of musical pages. PDFs can't transpose, can't reflow to your screen, and don't know what the notes are. They're images.

MusicXML is music data

Musync is built on MusicXML, the universal music data format used by Sibelius, Finale, MuseScore, and Dorico. Because Musync understands every note, rest, and dynamic on the page, your scores can scroll with your playing, adapt to any screen, transpose in one tap, and follow you across phone, tablet, iOS, and Android.