12月9日的Songbook+应用程序分析

This songbook expands basic free version with more functions. For example batch saving, creating new songs, sharing by bluetooth, email and other. Convert all data from free version with one button. Purchasing this app supports future development. Songbook searches in many Czech and Slovak databases. Other features: Sort by author name, text edit, chord transposition, zoom, font size change, import/export and more. Songbook on Facebook: https://www.facebook.com/zpevnikandroid/