the worst thing that could possibly happen to ao3 is it being put on the app store so please stop asking for it because you don't understand what would happen if that went through. ao3's whole deal is it archives EVERYTHING, while the apple app store's whole deal is keeping everything clean and safe. so if ao3 were to have an app all of the 'bad' stuff, including nsfw in general, would have to be censored at best or would be purged at worse. the google play store is more lax but who fucking knows what GOOGLE would police if they got their hands on the archive. do not ask for an app. do not use third party apps. it's on mobile browser functioning perfectly, just fucking use that before you ruin everything for everyone please.
A graphic from Mad magazine #182 from April 1976. The larger piece this comes from is "A Mad Portfolio of Some Idealists' Dreams" by Arnoldo Franchioni.
I have been starting to visit and revisit Mad following the discovery of a huge box of old issues in the storage unit of my wife's late uncle. Some of this stuff has aged in rather interesting ways.