Grid Calculator application

The application page can be found at https://www.designersbookshop.com/grid-calculator-basic-edition.html. You can see the features of the application on the above page, O will add just some development related details.
The application was developed in the begining with the Qt4 toolkit and later the Adobe AIR was used. We chose AIR for the fact it would be easy to send updates to the application in a easy cross-platform way. The application uses custom skins,styles also the preview feature offers a real time preview of the grids. The AIR/Flex platform is a decent platform to develop with, my blog contains more details about developing appliucation with this framework. We had sokme problems with the ELS(encrypted local store) that had some ugly bug that made the users lose the stored data after an update, we had to make a workaround in our application and never used ELS.