Gallery OS is an Android application developed by TriverSoft. It is a free utility tool that allows users to easily manage their photos and videos on their phones. With Gallery OS, users can view their media by timeline, which can be sorted by day, month, or year.

One of the most interesting features of Gallery OS is the ability to easily set an image as wallpaper. Additionally, users can edit their photos directly within the app, including cropping, rotating, and adjusting brightness and contrast. Users can also share, favorite, and delete media, as well as access a recently deleted item folder.

The app has a sleek and modern design, with light and dark themes available to suit user preferences. Gallery OS also allows users to select multiple files at once, making it easy to organize and manage large collections of media. Overall, Gallery OS is a powerful and user-friendly media management tool that is definitely worth checking out.