I'm usually a bit reticent to try non-browser based games but when I saw that it was a clicker I downloaded it directly! I love this kind of game, I tried to make one once but without success... it was boring...
Yours is really cool, well balanced and very addictive :)
I think that the only problem is on the UI, it took a while before I understood that the + was on the left and the - on the right. I think it's very strange ^^
And maybe it misses a visual effect when you produce or upgrade successfully to notice the user that the action was done.
But despite that, like I said your game is really good! :D