There are 4 types of Post-it widgets for iOS / iPadOS 14 in total, large/small for single/multiple notes, and you can tap the widget to open the app and edit the sticker content. The system requirements for Mac apps are macOS 10.15 Catalina and above. In Post-it v4.1, besides the widget, it also supports doodles supported by iPadOS 14, and late last year a Mac app was released that can sync with iCloud, using Mac Catalyst that can convert an iPad app.

This Post-it app is an app that converts the Post-it® sticker sold by 3M into a digital sticker simply by capturing it with your iPhone or iPad camera. With support for Scribble you can use Apple Pencil to write on your digital Post-it® Notes and have the text automatically converted to typed text.Use the new widgets to place important thoughts, ideas and todo items right on your home screen.When I looked it up, the Post-it app of 3M Company, which sells stationery and office products supported widgets with the update on September 17th. Sticky Widgets an app (widget) can display notes on the iPhone or iPad home screen, like Stickies on macOS, using the iOS 14 widgets feature, but I need a feature that can sync with macOS.

The 3M Post-it for iOS Notes App is compatible with iOS 14 Widgets.

Macos sticky notes