A free Android Gallery App to manage local photos: find, sort, view, copy, delete, send with Geotag support: set gps exif data, show in map, find via geoarea/map.
It open-source and available via the f-droid store, but not on the Google Play Store.
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Pro Can handle big image collections
15000+ images in 1000+ folders.
Pro It is free
Open-source, no ads, no user tracking.
Pro Quick hirarchical folder navigation
Only folders that contain pictures are shown.
Pro Powerful geotagging/openstreetmap integration
A map shows where photos where taken. if you zoom in you see more details. Geotagging: select one or more photos + "set geo" + pick a point in the map ==> the selected images get that point. Filter images through the map: after selecting an area in the map (i.e. North Germany), the gallery will only show images from North Germany.
Con It is not available on the Google Play Store
You have to download it via f-droid.org store.