GPS Map Stamp: Add a Geotag on Gallery Photos
You can refer to this app. It is a free application on Google Play Store. The application has a GPS stamping feature. Along with this, map stamp can also be added to the photos.
Find this application here:- https://play.google.com/store/apps/details?id=com.photolocationstamp.gpsmapgeotagongalleryphotos
Hope, you like this app!