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.