HVAC Proposal Maker walked the user through a complex series of questions to build an order for an HVAC system. The user could include a signature in addition to the relevant answers. The final report could be viewed in app or exported as a PDF.
The app made heavy use of Core Data/Magical Record for storing versioned surveys and their results. The app interacted with a Ruby on Rails backend via RestKit. The app used Core Graphics for generating PDF material from HTML.