Fun! I love playing with Convay, so I'm of course super biased, my only criticism are the "Yay" sound and the reset not letting you see right away how many generations you need (yes, silly, I know, but it came up a few times because my brain is apparently a sieve).
It gets pretty tricky! I could see this as a real mobile app, it's already polished enough. Finished all 25 levels. 23 and 24 are a bit of an in-joke in this order, aren't they? :D