You are most welcome:-).

An app? Apparently an API is in development for it, but it's still in alpha stage. Even so, there's a bunch of new features in PieFed that Lemmy does not have, such as Categories of Communities, so in some ways it would be a downgrade to use an app.

I just use Firefox to access https://PieFed.social, and it works fine. Well, mostly, bc even though PieFed has things that Lemmy lacks, it lacks some polish compared to the Lemmy web UI that has had more development work put into it. This is where an app would come in handy - if you didn't need all the new features that PieFed offers and just want Lemmy without the "Lemmy" part:-). (And didn't want to use Mbin, which iirc also lacks an API and thus ability to access via an app.)