Opens PDF, Word, Excel, PowerPoint, photos, video, audio, Markdown and code, all rendered on the device. About 5 MB, one build for every processor, Android 8.0 and up.
Search works in every document type. PDF text selects, copies and reads aloud to a screen reader, and there is a night mode that turns the paper black and leaves most photographs alone.
Its permissions page is empty and the manifest has no INTERNET so it can’t open a network connection. Files reach it through the system picker, an Open-with intent, or a folder you grant once. The About screen asks Android what the app requests and shows you the result.
Not an editor. Legacy .ppt does not open. Complex PowerPoint renders approximately.
I will be in the comments today, so ask away, including why it isn’t on F-Droid yet.


Ok then, why not on F-Droid yet?
F-Droid is the one I actually want. The request has been open since July (https://gitlab.com/fdroid/rfp/-/issues/4138) but nobody from F-Droid has reviewed it yet, which seems to be normal there.
The one thing I expect review to bring up is that the renderers are vendored as minified JavaScript, and I’ve offered to swap in unminified copies or build them from source. Meanwhile, the APK on GitHub releases works with Obtainium.
Put a “Get it on Obtainium” button on the README
Done, thanks! The README’s install section now has a one-tap link to add Gander to Obtainium: https://github.com/mokshablr/gander#install