Pretty fun game. The art is cute and I enjoyed all the different bug types. It would be nice if the building/upgrade UI was a bit bigger when zoomed out.
Maybe I saw this incorrectly but I noticed when I have 15k food I couldn't buy an upgrade that costs 15k. Make sure to round your prices up and the balance down! So 14.6k food becomes 14k, not 15k, and 15.1k cost becomes 16k.