I used several Reddit apps over the years, mostly Relay, Sync, Dash (rip) and Boost. Boost and Sync were my favorites in the end, with a slight preference for Boost (per subreddit view settings and a much better gallery view being the core reasons).

I bought them all and even subscribed to Sync Ultra several times since its inception. I'll subscribe to Sync for Lemmy as well, at least until Boost comes out - my ad-filter is preventing the ads from loading anyway and I'll feel better subscribing.

But I will break with my rule to purchase the ad-free version of any app if it's available on this occasion. 22€ is simply too much to gamble on an app with an uncertain future and a flaky history. ljdawson already paused work on Sync on at least one occasion and is almost certainly going to do it again if this financial gamble isn't working out.