It does have ads, but with a one time purchase you can get rid of them. I've paid that and then I also plan on getting the subscription in the future for additional features.
The price is definitely a bit on the higher side, but I'm happy to support the development of the app I left Reddit for.
If you are able to, please support the apps and Lemmy instances you use.
Sync is the reason I'm here. For me, Sync was Reddit, and now, Sync is Lemmy.
Much like with Reddit years ago, with great apps like BaconReader and RIF, Lemmy is benefiting from having a huge choice of apps. Definitely try them all, and support the ones you like.