FinalCrypt is described as 'Uses the most unbreakable encryption: "One Time Pad" Encryption and has a well designed graphical user interface and an equally advanced command line interface for large automations' and is an app. There are more than 25 alternatives to FinalCrypt for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best FinalCrypt alternative is VeraCrypt, which is both free and Open Source. Other great apps like FinalCrypt are Cryptomator, TrueCrypt, LUKS and FileCryptor.