I love sync and it's been my go to app for a decade across reddit and Lemmy, but I find it's advertising and pro features far more frustrating now than ever before.
The dev also takes long breaks but I don't mind this as his work while he's active is really really good and fast.
If you already use revanced manager for YouTube or other apps, there is an ad free patch for an older version of sync which has an easy APK to seek out, which is recommend.
Boost for lemmy. No contest. Nice, clean unique and smooth UI, better discoverability and seems built by a person who cared than a person who stole from a 2013 android app wrapper and pasted the lemmy website
Great custom options. From the colored split of comments and the option to customize colors of font of title and content. (Much easier to read upon scroll).