IMSLP:Apps

Apple app store icon.png (iPad only)

Google play button.png (Android tablet/phone)

Amazon appstore button.png (Kindle)

The iPhone app is in development and slated for release May 2019.

Other Apps

MusikViewer

An open-source Android phone/tablet app to open, view and playback MuseScore and MusicXML files, with extensive export capabilities (MuseScore/MusicXML/PDF) and limited editing capabilities (transposition, adjusting playback speed).