Actually forget everything I just said in the replies lol. Just tried the latest version, and the lag is fixed AND I can properly close the game now, so thats really cool!
And with the addition of "buy max", none of what I said applies anymore lol. the "buy max" button just effectively acts as "get infinite of this currency" lol, and the way you have to unlock it makes sense for this.
I think the basic cycle is good for now, and I look forward to seeing how you deal with prestige and stuff!
Also, the numbers get stupid big and flow off the screen (image upload is not working rn but I'm sure you can recreate). Might want to switch to scientific notation after a quintillion or so.