I like Apple's push to make apps 64 bits. It has been slow until recently, but, the last month, a large number of apps have been re-released as 64-bit apps. Then, there are holdouts-- apps that could have been fixed a long time ago and haven't been. I've been using System Activity Monitor (arm64 itself) to see which apps are actually running as arm64. Hall of Fame (64 bits) (All of iOS system processes) (I believe all standard apps - Mail, Safari, Preferences, Contacts, Calendar, etc.) System Activity Monitor Google Maps Google Chrome YouTube Khan Academy AccuWeather Wikipedia Weatherbug The Weather Intel ARK Adobe Acrobat GoToMeeting CodeAcademy NBA Game Time MLB At Bat Instapaper Gas Buddy CNN CBS News ABC News (ABC News local affiliate) (CBS News local affiliate) appleinsider USAToday AP Mobile Huffington Post Business Insider Bloomberg Business Flipboard The Atlantic Hall of Shame (arm32) Google Earth (Really? Come on, Google!) CurryPinger Apple Remote Cisco WebEx Embark (series of mass transit apps) NBC News (NBC local affiliate portals) DW News Portal France24 NPR Radio PBS PublicRadioTuner Reuters BBC News PRI (Public Radio International) Feel free to check and add your own. Too bad Apple doesn't display the 64-bit capability in the apps section of iTunes.