What is Reddit's opinion of SpaceChem Mobile Demo?

From 3.5 billion Reddit comments

Check out SpaceChem. Nothing with mining but a while lot of automation and routing problems to solve :-)

SpaceChem is on Android actually

Demo - https://play.google.com/store/apps/details?id=com.zachtronicsindustries.android.spacechem.demo

Full - https://play.google.com/store/apps/details?id=com.zachtronicsindustries.android.spacechem

Spacechem is on android? Wish I'd known before!

Also, to everyone else: There's demo's of both Spacechem and Ironclad tactics on the Google play store.

SpaceChem is hard. It has some problems and limitations on mobile platforms, so check out the demo first, if you wish to try the game.