Sleepy Hippo Live Wallpaper Free is a personalization app for Android devices developed by Jason Allen. The app features an animated hippo on your home screen, stuck on the moon after a minor miscalculation. The hippo tries to fly away, but it's the middle of the night and he's a little sleepy. The hippo gets sleepier as your battery level drops, making it a unique and fun experience for users.

The app also includes a beautiful night setting by Anne Pätzke, and it supports all screen sizes. However, the free version has limited features, and users can get the full version by purchasing it on Google Play. Overall, Sleepy Hippo Live Wallpaper Free is a fun and creative app for those looking to add a unique touch to their Android device's home screen.