How to find hidden vault apps on iPhone and Android devices 👇 Visit the App Store on your kid’s phone and type in “vault app” or “hide photos” or “secret app.” If any of them have “OPEN” next to them (instead of “GET”), it means the app has already been installed on their phone before. 🚩 Names of popular vault apps: (These hidden apps are constantly changing making them even harder to discover.) AppLock Vault Vaulty SpyCalc Hide It Pro SPV Secret Photo Vault Secret Calculator Calculator Photo