APG is described as 'Android Privacy Guard (APG) is a free and open source application for Android devices, created by Thialfihar, that lets you encrypt and decrypt single files or emails. Its goal is to provide a similar ' and is a file encryption software in the security & privacy category. There are more than 10 alternatives to APG for a variety of platforms, including Linux, Mac, Windows, OpenPGP and SeaMonkey apps. The best APG alternative is GnuPG, which is both free and Open Source. Other great apps like APG are Kleopatra, OpenKeychain, Enigmail and GPGMail.