HD Gallery is a free Android app developed by RamdevMap team under the Utilities & Tools category. It is a smart gallery photo viewer, picture gallery, and photo management app that offers a wide range of features. The app supports various photo and video file formats, making it one of the most feature-rich photo management apps out there.

One of the most useful features of HD Gallery is its ability to be used as a duplicate photo and video remover. This feature helps users to free up space on their device by removing files from the gallery. Additionally, the app allows users to password-protect their photos, organize them, display them slide-show style, and share photos via email or social networks.

HD Gallery offers several additional features, such as the ability to discover and find forgotten moments, relive and share your picture-perfect moments, and find your favorite moments with ease. The app also comes with a powerful photo editor in the Gallery photo album, photo albums with effects, preview photo for Gallery wallpaper, intelligent search suggestions, and slideshow animation with unlimited photos.

Overall, HD Gallery is an excellent app for organizing your photos and keeping them private. The app is easy to use and offers a variety of features that make it stand out from other photo management apps in the market.