At this week’s Worldwide Developer Conference, Apple is urging developers to move all their apps to 32-bits as support for them is coming to an end.
iOS 11 drops support for 32-bit applications. Any 32-bit app will refuse to launch and instead show an alert pressuring the developer to release a 64-bit update.
Apple has also started the transition for macOS to drop 32-bit support. The company say all apps and updates submitted to the Mac App Store next year must be 64-bit.