F-Vault is described as 'Unlimited Vault Space. Drag&Drop,Copy&Paste. Just like a hidden vault folder. Not only files, also folders, you can add any thing into vault. Nobody can open the vault except you' and is an app. There are five alternatives to F-Vault for a variety of platforms, including Android, iPhone, iPad, Kindle Fire and Android Tablet. The best alternative is Magic Photo Vault, which is free. Other great apps like F-Vault are Vaulter: Private Photo Vault, KeepSafe, Pinbox and Lynx Privacy-Hide photo/video.
Keep your entire photo library safely stored in an encrypted private cloud. Save valuable hard drive space by backing up your photos, and access your password-protected library with the KeepSafe app for both mobile and desktop.
Lynx is a professional app designed to protect a hide mobile privacy. All your private photos and videos can be password-protected and automatically synced to a 5GB free cloud space to save your device space.