Any app that deceives users by showing a completely useless ‘free version gets a single star from me just for being dishonest. I did spend the $10 to try out the Pro version, but this kind of marketing is morally questionable. The app itself is kind of buggy. The exports break elements and visualize them incorrectly. The ‘measurements’ are not always right. And the user experience kind of stinks. Honestly it is a Sketch add-on, you’d think they would have done some UX on it.