Available on AppStore: https://itunes.apple.com/us/app/documents-viewer-accurate/id669936998?mt=8
Documents Viewer by Nektony is a 4-in-one tool for MS Office documents: Viewer, Printer, Converter and File Manager. The app represents documents in original view the way they were created on desktop version.
This video shows representation of Word Charts, Diagrams and SmartArt objects.
More about the app: http://nektony.com/documents-viewer