The Fossify suite (like the gallery app that was linked to in the OP) was forked from this. Simple Mobile had been bought out by an ad company or something last year, so the community moved onto Fossify. Note how Simple Gallery has not been updated in over a year, and was removed from F-Droid.
“Gallery” from the F-store.
If this is the one you’re referring to, they have a bunch of other no internet required, no ads, privacy friendly, foss apps.
https://github.com/SimpleMobileTools/Simple-Gallery
https://github.com/SimpleMobileTools
The Fossify suite (like the gallery app that was linked to in the OP) was forked from this. Simple Mobile had been bought out by an ad company or something last year, so the community moved onto Fossify. Note how Simple Gallery has not been updated in over a year, and was removed from F-Droid.
Nice. Thanks for the info.