A great ABC editor! I've used Barfly on the Mac for a long time and while this doesn't offer the split view "live" editing that Barfly does, its a nearly perfect android implementation of the open source abc utilities on which its based. Its exactly what I needed to create abc on the go, check that it sounds right and output sheet music. If you don't know what abc is or how to use it please down downvote until you look it up!
Intimidating at first look. I am not a computer genius. So, reading and using programing language is not my speciality. But, this software is very simple. It comes with the demo and I can understand the code within 10 minutes. I am a student composer and i approve this. Definitely the best music notation app on tablet(mobile phone) yet.
Easier than using a PC get good scores from ABC files I am a tin whistle and mandolin player with some basic ABC skills. I am used to copying ABC data from the sites; The Session and Abcnotation. On an Android tablet with USB k/b attached, this is all a lot easier using Zap's ABC. If you copy and paste from such a site, do not use the built in Browser or Dolphin, as the line breaks fail to copy correctly. Use Opera or Firefox.
Needs offline support While I find this to be an exceptional app, I don't understand why the midi and the pdf converter require an internet connection when those things can easily be part of the app and made to be used offline. I'd be more than willing for the app to be bigger if it meant I could really make music anywhere, and not just at home or wherever I have 3G
Cannot choose folder location The app needs a setting that allows the user to designate his preferred location for the default folder (it will not place or access a folder on the sd card). Better yet, design the app to search all folders for abc files. Otherwise, a very useful app for musicians.
MIDI instrument support? Am I doing something wrong or does the MIDI playback not support the "%%MIDI" and "V:" parameters of the ABC notation spec for changing instrument? A good app regardless - using it to test playback of Markov Chain-generated music.
0.9.9 Workaround for new buttons on some devices.
0.9.8 Shortcut button list, better support for saving the preferred alternative viewing/playing app, minor fixes.
Keep the feedback coming...