Dark Knight Keyboard Theme is a personalization app developed by Keyboard Arts Themes for Android devices. This free app allows users to customize their keyboard with a dark knight theme.

To activate the keyboard theme, users need to install the latest version of RainbowKey, a keyboard app. Once installed, users can easily apply the Dark Knight Keyboard Theme by opening it, and it will be enabled automatically. If RainbowKey is not installed on the device, users will be redirected to the Google Play page of RainbowKey to install and activate the app.

RainbowKey, the main app, offers a range of features to enhance the keyboard experience. Users can create their own keyboard with their favorite pictures, decorate the keyboard with beautiful fonts and colors, and choose from a variety of built-in themes. The app also provides stylish fonts, swipe input for one-handed typing, smart emoji prediction with over 1000 emojis, auto correction, word prediction, and the ability to move the cursor by swiping on the space bar.

Overall, Dark Knight Keyboard Theme, in conjunction with RainbowKey, offers users a customizable and feature-rich keyboard experience on their Android devices.