Starth Bing Wallpaper is a free and open-source Android app that allows you to automatically change your device background or lock screen with Bing image of the day. The app also provides features like browsing Bing images from the last two weeks, manually setting Bing images as the background or lock screen, saving Bing images without logos, viewing daily Bing stories, and using desktop widgets. However, the lock screen wallpaper function only works on Android L(21) and above for non-MIUI systems, and on Android N(24) and above for MIUI systems that need root access.

Starth Bing Wallpaper is perfect for those who want to add some variety to their device backgrounds or lock screens. With its simple interface and easy-to-use features, users can customize their devices with stunning Bing images. The app's ability to browse past Bing images and view daily Bing stories adds an educational component to the app, making it perfect for those who want to learn something new while also enjoying beautiful images.