Which Android app should I use to hide private photos and videos on my phone?

Vault is a dedicated privacy application that creates a secure, password-protected space on an Android device specifically for concealing photos, videos, and other files. For users concerned about prying eyes—whether from someone casually browsing their gallery or in situations where a device might be shared—the app provides a straightforward solution. Media is moved into the app's encrypted storage and removed from the public gallery, accessible only after entering a secure PIN, pattern, or password. A notable feature is the decoy PIN option, which opens a separate, empty vault to mislead anyone demanding access. Users managing sensitive work documents or personal media report the disguised app icon, which can appear as a calculator or audio manager, adds a useful layer of stealth. The app includes a break-in alert that captures a photo of anyone entering an incorrect password, sending the image to a predefined email address. However, some reviews indicate that moving very large video files can occasionally cause a slight lag, and the free version includes promotional banners. Despite these minor drawbacks, Vault delivers a focused set of privacy tools without unnecessary complexity, making it an effective solution for securing personal media from casual snooping.