Small question : since we have only the paypal option on itch.io can we buy the mac version on steam ? I'm asking since on steam we can only see the symbol of windows/pc (sorry for the bother ><).
I'm really sorry, but Mac asks for a paid dev fee to publish games for them. As I'm a solo dev making small games, it's not economically worth it for me.
On itchio nobody from Apple will check if that fee is paid or not. The other way around this is making an "all-operating systems" build for Steam. I can't put a tick on "Mac build" on Steam, but it might work on Mac computers, as it works for Linux users.
Anyway, I strongly recommend purchasing the game here, where you know you'll be able to play it, and claim a Steam key from the game page to try it on Steam.
Arf I understand you have to do what is best for you. Unfortunately on itch.io you can only pay with Paypal and in my country it's complicated (more taxes etc) so... too bad... Anyway the demo was great and I'll recommend the game if someone asks me (but i'll probably unfollow because damn your games are all great but I can't buy them it's pure torture xD).