What's the best Android app for hiding private photos and videos securely?

Gallery is a practical option for Android users seeking to safeguard private photos and videos. The app includes a dedicated secure vault feature that allows media to be hidden behind a password, PIN, or pattern lock, preventing unauthorized access. This is especially useful in shared device scenarios, such as families or workplaces, where users might want to keep sensitive content like personal documents or family photos confidential. Reviews highlight the straightforward process for moving items into the vault, often noting that it integrates seamlessly with the main gallery interface for quick access. Additionally, the app supports basic organization tools like albums and categories, which help in managing both public and private collections. However, some users mention that the free version displays occasional ads, which can interrupt the experience. Despite this, the core security functions are reliable, and the app maintains a smooth performance for everyday viewing and management tasks. For those prioritizing privacy without advanced editing needs, Gallery offers a balanced solution with minimal learning curve.