- day/night mode (requires Android 4.0 or higher)

The following file formats are currently supported:
- OpenOffice 2.x, 3.x, 4.x and LibreOffice Open Document formats: .odt (Writer), .ods (Calc), .odp (Impress)
- OpenOffice 1.x formats: .sxw (Writer), .sxc (Calc) (no support for embedded images)
- Microsoft Office 2007 formats: .docx (Word), .xlsx (Excel), .pptx (Powerpoint)
- Microsoft Office 97 formats: .doc (Word, plain text extraction only), .xls (Excel, experimental, only plain cell values)
- PDF (experimenal on Android 4.4 and lower, needs to be activated in the app settings)
- ePub books
- Other formats: RTF, HTML, .txt (plain text), .csv (comma-separated values), .tsv (tab-separated values)

Please note that some restrictions apply for viewing documents:
- Displaying the documents is done via a conversion to HTML, which is why the document will look differently than if viewed with a desktop office productivity application
- Large spreadsheet documents may take some time to open, or sometimes not open at all
- When displaying images, only those images will be shown where the image format is supported by the Android browser
- Password-protected Microsoft Office docs cannot be opened

Full version. Internet access permission required in order to be able to display external images in ODF documents.

If you are smart and you like this app, please rate it. If you are smart and don't like it, please send me an email to tell me what should be improved. Not so smart people may simply give a bad rating and/or use swear words in the comments and/or complain about "missing" features the software never promised to have...