Also, if you aren’t happy with your flowchart diagram or have made a mistake, you won’t have to do much reformatting or start all over. Simply, hit Ctrl+Z in combination to undo the last step.

Like Gliffy, Flowchart.com, and AutoDesk's experimental Draw project, the app enables you to create diagrams and more in your browser with drag-and-drop functionality.

Diagrams app is available on the Mac App Store for $19.99 as a special launch price for a limited time. After that, the app will cost $29.99, but it’s a one-time purchase without any subscriptions.