Sync for Reddit was a popular app.
After the whole API thing the dev started developing sync for Lemmy.
The open beta was just released.
The free version includes ads.
You can remove ads with a subscription, or with a one time payment of $20.
The Reddit ad free version was like $5, so the price increase pissed some people off.
Also the FOSS or die people got pissed off.
There are many great Lemmy apps, I say just use whatever works best for you.
Voyager has the mark as read on scroll.