YSK: wefwef is a web app that look very similar to Apollo and works on both android and ios
Why YSK: looks very similar and functions like Apollo, if you're used to Apollo that's a great app for you, even if you do not, it's still one of the best apps for lemmy
You can install the web app here: wefwef.app/settings/install or just use it on your browser here wefwef.app
As a note though, wefwef is FOSS. It's GitHub page is linked in the web app and there are instructions to host a version of it yourself, if you so desire.