Social network Reddit recently began blocking mobile visitors to its website while pushing them to download the official Reddit app, and it's fair to say that the move is not going down well with users. If you visit reddit.com on your iPhone today, you may see a new popup that can't be dismissed, asking you to "get the app to keep using Reddit".
I think there are still “read-only” clients. I haven’t looked in awhile, but I know there were some available via F-Droid (alternative app store) long after the API was cut off. I assume they use standard web scraping for grabbing content.
Also, I’m not sure if it still works, but I think you can still use open source clients that rely on the API, you just have to compile/build them yourself using your account’s own personal API key.
I haven’t looked into either of these in a while and definitely not an expert on the topic, but I’m sure if you’re interested there’s enough info out there to find a solution that works for you.