July 1, 2023 was the (known in advance) effective date of the reddit API change that killed 3rd party apps. Not really too surprising a bunch of apps for Lemmy started development leading up to that change in order to try to establish a userbase among the refugees. I was one of those refugees.
I too came here from the Reddit migration - when Apollo died, so did Reddit for me for the most part. It was amazing the number of Lemmy apps that popped up in those days, and how many of them have been eventually abandoned. I've settled on Voyager for my iPhone browsing and Alexandrite for my laptop browsing, and I've been really happy on Lemmy.