Themes Picker DIY Your Phone is a free personalization app developed by Timewarp Developer for Android 13.0 and above. It offers a wide range of free backgrounds, live wallpapers, and stickers that can be easily personalized to give your phone a unique look.

The app has an extensive catalog of wallpapers with full HD and 4K resolution options, including black phone wallpapers and girly wallpapers. You can customize your phone's home and lock screen with various options, including auto-selecting a new background that rotates at selected intervals. Additionally, you can personalize your background with cool filters and stickers.

Themes Picker DIY Your Phone also offers an extensive catalog of quality live wallpapers that don't drain your phone's battery and only play once when you turn on your home screen. The app also features a charging lock screen with over 5000+ styles, including categories such as technology, cyberpunk, steampunk, robots, dark, gloomy, cute, animals, and more.

Lastly, users can add wallpapers to their favorites while downloading and receive notifications on limited edition holiday wallpapers for occasions and holidays like Valentine's Day, Father's Day, Mother's Day, New Year's, Halloween, and Christmas.

Overall, Themes Picker DIY Your Phone is an excellent app that lets you design your own phone theme with ease.