A free program for Android, by Pavaha Lab.
Font Style Candy is an application that allows you to write on images, using your phone’s camera. You can choose from a wide variety of fonts, from standard ones such as Arial and Times New Roman to the more unusual ones, like those in the comic book universe.
You can write in any color and use any font style, including bold, italic, and even fonts with handwritten letters. You can even use your own pictures as a background.
If you’re looking for a simple and easy-to-use application that will allow you to write text on images, this is the one for you.