Themes App is a free personalization app for Android developed by Wallpapers and Themes. This app offers a variety of features, such as 900+ HD icons, 4k wallpapers, and the ability to change your launcher icon pack. The themes app supports all Android phones, including Samsung, Realme, OnePlus, and Oppo phones.

The app offers a beautiful round-shaped design for HD icons and works with all Android launchers. Downloading wallpaper photos is easy, and you can make your wallpaper collection. The app also offers a material design dashboard, a neon clock widget, and the ability to apply free themes in a single click. It's important to note that this is not a standalone app but an icon pack for Neox Launcher.

Overall, Themes App is a free personalization app for Android that offers a variety of features to customize your phone. However, it's important to note that this app is only compatible with Neox Launcher and not with other launchers. If you're looking for a way to personalize your phone with beautiful HD icons and 4k wallpapers, Themes App is worth a try.