A nice simple app that does a lot of powerful things, has a lot of powerful features.
The App works on Mac OSX and on iOS and inputs are viewable on either as the App syncs between devices seamlessly.
This app gives a nice variety of options depending on how you want your text to turn out, whether it just be correcting it to a stage that is more acceptable, or possibly into the form of a specific format such as journaling, report writing, bullet points, scientific, that type of thing.
It has the ability to simplify your text as well as structure it far better.
If you enjoy journaling, then this app will help you also as it has the ability to structure your journal inputs into specific topics, stroke formats.
There is a trial version that works for free, first of all, which gives you lots of features. I quickly decided it was the right one for me and went to Pro and think I've made the right decision.