I've been using the app on breaks at work at nearly half the rate I had been using RIF. Here we see that it still used about 2x the data in roughly the same time period.
The app's great. The bugs are getting hammered out and Lemmy's great too. Can you look into doing some optimising soon?
Edit: To be more specific. RIF used just over 1gig over 10 days of browsing during breaks. Most months hit about 2-2.5 gigs. While connect used 2gigs in 6 days.
I think it's because there are a lot of meme posts on my front page (my default frontpage is to display all communities). I changed the frontpage to subscribed community, I hope this will reduce my data usage