I would recommend this App only if you have a small amount of locations.
Nice layout of map and locations
You need to modify your browser privacy settings to use this App
If you have a lot of locations you'll want to Export, make edits, and Import. But this App does not make this process easy.
You can't navigate from location to location when editing (no pagination between locations) so you have to go back to page 1 of the list of locations, remember where you were, find and open that location, make your edit, and repeat. More than 10 locations and this is a huge pain.