I am in the same boat. Bought RIF years ago and there are a couple of other apps I got as a one time purchase but subscriptions mostly make me delete an app immediately. Stuff like Spotify or Netflix are exceptions of course but those apps are just the gateway to a paid service. Sync doesn’t have to pay money on an ongoing basis to Lemmy. It’s straight up a purchase to the developer for an app.

Not too concerned though, I use Voyager at the moment and it’s just such a great way to browse Lemmy, I have no problem sticking with it!