There are other tools that are free. And in my opinion better than this. I've used both RegExhibit and Reggy. Both appear to be Open Source, though development

There are other tools that are free. And in my opinion better than this. I've used both RegExhibit and Reggy. Both appear to be Open Source, though development has appeared to have stalled on both. They are at least both worth looking at before you spend 14.99 on an app.