What is the crowd's opinion of The Appies: Graph Puzzles?

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I'll bite! Try mine! Try mine! I've made an amazing -£25 since it went live at the start of 2016!

https://play.google.com/store/apps/details?id=mxk.gs&hl=en_GB

EDIT: It is free, no ads, no in-app purchases and generally sucks judging by the rate people are uninstalling it.

I'm gonna gate crash this thread and mention an Android game I developed a few years ago where you have to solve graph colouring problems: The Applies: Graph Puzzles.

Let me know if you end up playing it because it would put a smile on my face! Don't tell me about bugs, though, I got better things to do today!

Well, there's this game I wasted about a year of my life on...

... but that was development time. Completely wasted, of course, even my kids have uninstalled it now.

Damn it. My graph-based puzzle game sucks by comparison.

But what it does have going for it is... non-planar graphs!

17% for Play Store (organic) in January so far.

Must be doing something wrong :'(

Does anybody care to comment on what I could improve (https://play.google.com/store/apps/details?id=mxk.gs)?