Diagrammix is an app for creating flow charts or diagrams with minimal effort. Diagrammix takes upon itself to connect elements, autosize elements while text entering, align elements and connectors. All you do is just drag and drop the elements from their palette, connect them and enter the text.
Your diagrams can be saved in a number of formats including JPEG, PNG, TIFF, PDF or copied to text processors via a clipboard.
You can purchase Diagrammix via the MAC App Store and the app sells for $19.99.