OOReader is an universal app for iPhone and iPad that allows users to view ODF documents created with OpenOffice or LibreOffice. With support for various file types including Text Documents, Spreadsheets, Presentations, Drawings, Math equations, Word documents, Excel spreadsheets, PowerPoint presentations, WordPad files, and PDFs, OOReader offers a comprehensive solution for accessing and viewing different types of documents.

Users can open documents in OOReader from any app that supports "Document Interaction" such as Mail and Safari. Additionally, OOReader integrates with popular cloud drives including Box, Dropbox, GoogleDrive, OneDrive, and iCloud, enabling users to access their documents from anywhere.

The app offers features like reading documents by page or slide view, file conversion to PDF, sharing PDFs via email or other apps, automatic syncing of documents from Dropbox, GoogleDrive, and iCloud, search functionality, printing, renaming of documents, and the ability to open password-protected documents with the PRO version. Users can view up to 100 pages per document, with unlimited page views available in the PRO version.

It's important to note that OOReader is not a document editor, and users cannot make changes to the file content. The app requires an Internet connection for online conversion.