Dragon calculator vault app is for hide photos, video in secure way with invisible mod this secure calculator app is best choice for you. secure calculator app protects your photo album, gallery, secret videos. This app make them hidden and invisible on your phone. This is a best app to lock photo, video on android mobile. Protect your privacy, make private files more secure.If photos, videos are locked by this app, they will no visible in photo gallery.

Features:
📌Simple Calculator
📌Image Vault: Hide pictures easily from your album.
📌Video Vault: Hide videos easily from your gallery.
📌File Vault: Hide any file from built-in file explorer.
📌Intruder Selfie: Automatically takes Intruder selfie when someone tries to break in your privacy by entering wrong password.
📌Set password : You can easily setup your password for this app
📌Password hint : You can use password hint , if in future you forgot the password.
📌Security Question : Security Question is integrated for password recovery.