Cheatsheet is for the little things you never remember: hotel rooms, license plates, luggage combination, ID numbers. Write them down in Cheatsheet and then refer to them anytime with the iOS, Watch, and Mac apps. Everything syncs to all your devices* via iCloud.
On Mac, quickly reference or copy your cheats from the menu bar, or look them up in a Notification Center widget or via Shortcuts (macOS 12+)
On iOS, Cheatsheet is as easy as swiping right on your lock screen, pulling up the keyboard, or glancing at your Apple Watch. Cheatsheet for iOS also supports Shortcuts, Siri, and Home Screen widgets.
* Sync with iOS devices requires Cheatsheet Pro for iOS, which is a separate in-app purchase in the iOS app.