I am working on an app that needs to figure out someone's location in order to say buy a coffee from the Starbucks closest to them.
The app currently uses the Twilio API to receive a text from someone's phone and act on it. The app can get the number and possibly the zip code if available from the text message; however, is there a more reliable way to get someone's location to accurately determine the closest Starbucks to them?
No, and the zip code is not reliable. It is an approximation based on area code.
Possible look at WhatsApp but not heavily used in some countries.
Can I share my location or receive location information on WhatsApp?