A free program for Android, by Abbott Cullen.

This free keyboard for the Android platform is a keypad that allows you to type in the Bulgarian language. You can use it to send e-mails, post on social networks, and write someone messages. 

The keypad is designed to be used with the Android operating system. It works on most Android devices and has a layout that is similar to a keyboard on a desktop computer. You can compose emails, post on social networks, and write someone messages. You can type in all the Bulgarian words, letters, and alphabets. You don’t need to copy and paste the text from the dictionary.