Славдроид is a free Android application developed by Slavdroid and falls under the category of Business & Productivity. This application is designed to help users write Serbian language using Serbian Cyrillic alphabet only, as stated in their constitution.

The keyboard toggle feature of Славдроид allows users to switch between English and Serbian Cyrillic alphabets easily. It is a simple yet useful application that can come in handy for those who need to type in Serbian Cyrillic alphabet.

To use this application, users need to go to Settings, then Locale and Text, and check Ser-En Toggle Keyboard. After that, they can select the keyboard as their input method.

Lastly, users can report bugs to the developer's website, slavdroid.com, and earn a mention in credits. Overall, Славдроид is a great application for those who need to type in Serbian Cyrillic alphabet using their Android device.