I'm not sure what you're asking about that app, but from its description in the Google store it seems to come with 256 Yamaha styles and lets you load new Yamaha style files. I hope they aren't actual unaltered styles exported from one or more of Yamaha's keyboards, or Yamaha might take exception to their copyrighted styles being freely distributed with the app.
I think you'll need to contact the app developer for information on how the app works, unless someone else here happens to have an Android device and happens to be familiar with that particular app.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.