Sync has always been a superior UI/UX to anything else.
And I'm happy to pay $20 for the developers work. Ads would barely pay him anything anyway.
I feel like all you lemmings are getting way too hung up on the whole ads = spyware thing. It's not the app that's the issue, it's the ad platforms - and those platforms are how he makes money. Don't like it? Pay $20 for a lifetime without ads.
Sync is good because it's a full time job for the Dev. That means the guy needs money to survive. I'm more than happy to help towards that, so I can have a better experience.
I used sync for Reddit for a loooong time, $20 is nothing compared to the value I've gotten out of it.