If you’ve been holding out, you have to make one of the following choices: However, Apple recently announced that Aperture, a 32-bit app, will not work in future versions of macOS, which will eventually support only 64-bit apps. Apple replaced those apps with Photos, but you could still run the older apps, and Aperture users were more likely to stick with Aperture. Five years ago, Apple stopped development on Aperture and iPhoto, two apps made for photo management, the former being the professional app and the latter the app for general consumers.