What's a good Android app for keeping private photos hidden but easily accessible to me?

Gallery is a straightforward photo management app that includes a dedicated, passcode-protected hidden album feature. This makes it a practical choice for users who need to separate personal or sensitive photos from their general camera roll. The hidden album is accessed by entering a numeric PIN, creating a simple but effective layer of privacy. Photos moved there disappear from the main gallery and other albums, yet remain fully functional for viewing, sharing, or moving back later. The app's overall organization—with chronological sorting, folder-based navigation, and basic editing tools—means the hidden album integrates into a familiar workflow without feeling like a separate, cumbersome vault. Reviews indicate users appreciate this balance of simplicity and privacy, though some note the PIN system is basic compared to biometric options offered by some competitors. For someone looking to quickly declutter a visible gallery or shield specific images from casual browsing, this feature handles the task reliably. The app does not encrypt the hidden files at a system level, so it may not satisfy users with high-security needs, but for everyday personal privacy, it's a well-implemented solution.