You cannot use a mastodon app as a lemmy client, but you can view lemmy communities by opening them as if they are profiles. For example, open @fediverse@lemmy.world and it will show up as a user, but it will be the communitiy’s posts.
You can mention it in a post to forward the post to the community as well.
I still feel that interoperability between mastadon and Lemmy is kind of messed up. How to browse a Lemmy community through mastodon application?
It’s terrible
You cannot use a mastodon app as a lemmy client, but you can view lemmy communities by opening them as if they are profiles. For example, open @fediverse@lemmy.world and it will show up as a user, but it will be the communitiy’s posts.
You can mention it in a post to forward the post to the community as well.