In Ozge Karaoglu's Blog post about iFake Text, she gives some great ideas on how to use this with your students.
Children can make two characters from a book to text each other.
Two famous people can text each other.
Children can create short poetry using this tool.
We can provide some part of the text and ask children to write their guesses of the other person’s answers.
Children can practice a dialogue, or questions and answers.
We can provide children the conversation and ask what has happened before and after.
We can use this tool to explain the meaning of a vocabulary.
It can also be a good idea to use this tool to practice advices or suggestions.
I recommend giving iFake Text a try.