Sync is polished with an experienced dev. All of the other free Lemmy apps have some kind of compromise. They're fine, but they definitely feel like they are free.
For those of us who really like Sync, we really like Sync and are willing to pay for it. I've tried the other apps, they're not bad but they aren't as good. For me. Others may have different opinions and that is fine for them.
I'm not sitting here trying to tell everyone else that what they like doesn't make sense. I'm just happy that what I like is now available. And I have no problem paying for it, considering how many hours of my life I have already spent using this app's reddit version.
I bought the top of the line Sync for Reddit when it finally rolled to the new look. Had 0 regrets.
For the amount of time I spent on (cough) reddit, the value I drew per dollar spent was solid. I got greater happiness from that than... alcohol, a nice dinner, or food delivery (which I never use).
But those are my points of comparison. Early in life, I worried about affording the next tank of gas or a large mechanical expense. During that period, ad free would be ambitious and top of the line would be... a family present to me around an important event. And how do you explain that?
It's the baseline and budget. Comparing to FOSS it may not rate. Comparing to a night out... I get more from the app over its lifetime.
If people can afford Sync, hopefully they (we) can afford to donate to keep the servers running?