Not free
You cant actually use it without buying the pro version. If you try to save it as a photo, its covered in watermark and words. I see nothing wrong with having to pay extra for more templates, but even the free ones arent actually free. But it looks like a cool tool if you dont mind paying the $7.99, and at least the "free" version lets you test how it works.
AmyB8484 about
Grafio Lite 3 - Diagrams & Ideas