SynCast Doc is an application which allows you to share the screen of iPad/iPhone to projectors and Tvs connected to wifi display adapter (which nScreenShare rx built in).
SynCast Doc can open Microsoft office documents (such as PowerPoint, Word, Excel), PDF documents, photos (in camera roll or in private folder), and web pages. You can share those types of documents to big screen.
SynCast Doc also supports downloading files from Dropbox and PC. If you need to download files from you PC, please install nScreenShare app for windows/mac and enable the feature, "FileShare".