Sync is phenomenal, imo. It gets less traction here because it’s not FOSS and the price to remove ads is pretty high, but in terms of features and visuals it’s by far my favourite. Great customisation too.
I’ve tried probably a dozen apps, but can’t get anything else to look and feel as nice as Sync.
I feel this. I was also diagnosed as an adult and I also pass well. The first time telling my friends about my then-new diagnosis was met with the reaction “what, no you’re not!” and I’m still mentally affected by that conversation. Dealing with guilt and imposter syndrome type feelings is tough. I don’t really have any advice but I know how you feel, at least.