Any practical use of geolocation
maps.. or showing the user stores near them ?
if you take several points with known location you can calculate surface area and perimeter. This is useful in many cases.
Here's a little fun thing for Android https://code.sololearn.com/c9XX3Z6Jq1b6
Wow... Heard today about providing content to users dependend on the... WEATHER around! :-)) If it's hot then ads banners could show you a glass of cold drink, and if it's cold you'll see a cup of coffee there or may be a fireplace... :-) I would suggest placing ads of travels to warm places when it's rainy outside :-)
Providing/passing a localized content to users (dependent on user's location).