Wallpaper Flex is an Android app developed by Flex Tech that falls under the Personalization category. It offers a vast collection of beautiful, girly, glittery wallpapers, including images of flowers, girls, boys, colorful glitter, nature, quotes, abstract, love, fantasy, live and many more types of girly backgrounds.

The app is user-friendly and straightforward, and it provides a collection of over 1000 UHD quality wallpapers that are free to use. You can set the picture as a wallpaper or lock screen on your phone with just a few taps. The app is ultra-fast and lightweight, and it offers some of the best-looking live wallpapers. You can even share and save your favorite wallpapers.

Overall, if you're looking for a simple and free wallpaper app with a vast collection of girly backgrounds, Wallpaper Flex is definitely worth a try.