Word documents, Excel spreadsheets, Powerpoint presentations and PDF files attached to email will open for viewing without any additional software. However, if you want to edit Office documents or view PDFs outside of email, you will need additional apps.
Some apps that have been recommended by existing iPhone and iPad users are:
- Pages: wordprocessor that can convert and edit Word documents
- Numbers: spreadsheet that can convert and edit Excel documents
- Keynote: presentation app that can convert and edit Powerpoint documents
- Evernote: note taking app available cross platform.
- Quickoffice and Goodreader: For viewing documents and PDFs
Apps are available for download from the App Store (Applications > App Store).