I did a poll and nearly 30% of the people who voted said they used Sync! It's stayed around that percent the whole time too!
EDIT: Here is the poll I forgot to put this here like five times lol https://strawpoll.com/wby5A21R1yA
Sync got me hyped for Lemmy, I used it for Reddit for more than a decade.
But, for Lemmy I started to use Connect, and while I was waiting for Sync, Connect became the Lemmy app for me.