Space Wallpapers 4K is a free Android app developed by 7Fon Wallpapers that offers an extensive collection of high-quality space backgrounds. The wallpapers undergo strict filtering from the publication to ensure excellent picture quality, and each wallpaper is selected individually for each device. With over 3k selected HD and 4K backgrounds to choose from, users can enjoy a variety of space-themed wallpapers that will look perfect on their phone or tablet.

The app features regular catalog renewal with manual moderation, image sorting by date, rating, and popularity, and image search by tags. Users can add their favorite backgrounds to their favorites for convenient access, download images for deferred installation, save images to their SD card or gallery, and frame images before installation. Additionally, the app allows for setting up wallpapers on lock screens and automatic background changes with specified intervals. Users can also receive notifications for picture of the day and picture of the week. The app has a sleek Android O styled design, consumes minimum resources, and does not run down the battery. Furthermore, the app is compact, takes up minimum memory, and is completely free to use.

Overall, Space Wallpapers 4K is a great app for space enthusiasts who want to enjoy stunning space backgrounds on their mobile devices.