2025-09-05 00:00:00 Secret photos & videos? Calculator Vault - Hide photos, videos & files under a hidden calculator. Secure passwords, notes, contacts & more. Calculator Lock - Hide Photos & Videos: Tired of Photo Hiding Apps that easily catch attention? Or perhaps you feel your phone needs a privacy upgrade? Step into the secure haven of Calculator Vault, the hidden calculator lock app that seamlessly blends into your phone's everyday apps. Unlock a secret vault of features designed to protect your photos, videos, documents, notes, passwords, and anything else you wish to keep confidential. All these features are hidden behind an innocent calculator.