Batch to change photos' GPS.
Saving image file:
--Duplicate Mode:
Duplicate photos first, then modify those new photos with new GPS.
--Overwrite Mode:
Modify the photos' time with new GPS directly.
If you want to restore photos after changing its GPS, you should open those changed photos in Photos and click Edit -> Revert
This app will reserve photo's original EXIF,only change its GPS information from EXIF.
The macOS version is also available in Mac App Store.
Bug fixes
Swap RGB 
Enhance RGB 