Android and iOS
LibreOffice Viewer for Android
The Document Foundation provides a LibreOffice Viewer for Android. It is available for download on Google Play:
Editing is still an experimental feature which has to be enabled separately in the settings, and is not stable enough for mission critical tasks. It will be enhanced in the future to a fully fledged editing solution with the help of developers. Editing features have been developed thanks to donations to The Document Foundation. Feedback and bug reports are very welcome, to help developers improve the quality of the application on its way to a fully-fledged editor. Users are invited to report problems, using the bug tracker and attaching files that have triggered the issue at https://bugs.documentfoundation.org.
LibreOffice Viewer uses the same engine as LibreOffice for Windows, macOS and Linux. This, combined with a new front-end based on Firefox for Android, reads documents similarly to LibreOffice on the desktop. LibreOffice Viewer has been developed by Collabora and Igalia, backed by Smoose, with contributions from Google Summer of Code students, together with The Document Foundation and the LibreOffice community. SUSE has provided a key foundation of cross platform support, and Mozilla Corporation several core components. More information is available on this wiki page.
Impress Remote for Android and iOS
The Impress Remote is a handy tool for controlling Impress slideshow presentations from a mobile device.
For more information (including F-Droid builds), see the wiki.