Apple has updated Pages, Keynote, and Numbers for macOS to, respectively versions 6.3.1, 7.3.1, and 4.3.1. All offer stability and performance improvements.
Pages is the word processing app for macOS (and iOS). Keynote (also for iOS) lets you create presentations and slides. Numbers is a spreadsheet app, and, yep, it also has an iOS version. The upgrades are available at the Mac App Store.