Are there some apps that won't be supported by Catalina because they are not based on sufficient "bits"? What do I do about that?
I'm about to upgrade from Mojave to Catalina on a 2016 MacBookPro, but I think there are some apps I have that were built on a "bit system" (I don't know the right term) that is not supported by Catalina. I think I have to do something to upgrade or change them in order to continue to have access once I upgrade to Catalina, but I don't know (a) how to identify such apps/programs, or (b) what to do about it. Advice is appreciated.
MacBook Pro