Been using Sync and love it, but there are bugs and the dev disappears for months at a time. Is Boost regularly maintained or should I just switch to a FOSS app?
Ruben isn't super quick to put out updates but he makes up for it in quality. He was slower than some other devs to get Boost for Lemmy out the door but the first release was damn near perfect, stable, fast and only very minor bugs. Personally I prefer quality over constant updates.
These developers owe us nothing and it takes an incredible amount of time and lots of money to develop an app of this quality so no matter which app you choose consider paying and/or donating.