Image credits: Sickweather Inc.

Sickweather

The Sickweather app’s “patent pending algorithm” scans social media for people who show their locations and share information about being unwell, for example, saying “I have a cold” or “I am going to see the doctor.” This information is then entered on a map and shared with Sickweather users. Sickweather users can also directly report their own symptoms to the map.