6. Documents To Go ($14.99)
Main features: View, edit and create text, spreadsheets, and slideshow presentations. View PDF files.
Cloud storage: Can load documents directly from your Google Docs account for viewing and editing.
Notable extras: A free app provided by the developer, DataViz, lets you sync your documents created with Documents To Go between your Android device and a Windows computer.
Microsoft Office compatibility: Could not load images contained in .docx files. Could not display charts or images in either .xls or .xlsx files. Some .ppt files would not load.
Conclusion: Very minimal feature-set in presentation app. Expensive for what it doesn’t provide.