Journal Question is a simple app designed to help you with what to journal about.
It has a list of questions that you can edit up to your liking, you can even add your own questions that you want to ask yourself. It comes with 21 questions but if you don't like some of them you can simply delete them, or cross them out so they do not get selected.
When you click randomize and it will randomly select questions and display a timer that you should journal for which ranges from 10-25 minutes.