I was wondering why my coins were getting smaller, checked the transaction history and found the following
WziVictory30for50.

does anyone know what this is for?

Spend 50 coins to get 30% more AP from an idle level.

It's a button you can press in the end-of-level window.

Did you click that by mistake?

I once fat-fingered my way into paying for a couple dozen AP.

That is the "Get +30% AP for 50 coins" you can purchase at the end of an idle level.

EDIT: Nvm, already answered while i was typing this...

Edited 5/31/2025 15:16:42

Edit: same

Edited 5/31/2025 15:28:36

Thanks to all who answered.
I have been going through the beginning levels quickly and have clicked it to get the extra points, the descriptor was a not clear.