I've always wanted something like this -- an art tool that can produce consistent results out of anything.

For $1, you may as well just get it!
You're reading this, you're clearly interested.

I should note that the results, at least from my sample image with a custom brush, are not instantaneous.
Which is good, in a way, because you can clearly see the passionate algorithms work hard to make nice art for you.
However, progress is saved automatically, and you can set the timer and play with the speed settings.
If you're patient, this program blasts generic filters out of the water.

My only minor suggestion is to implement a custom icon over the standard Unity one.

These are just my first impressions, I'm confident this tool will become extremely useful after experimentation.
So yeah, I recommend it a lot. d(^^)