Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Berkanan - Chat with people nearby. Even offline, on an ✈️.
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!
Bubi Chat - Location based anonymous chatting app
Guitar Pro 7 - Create, play and share your tabs
Vuash - Send secret messages safely.