"Effective July 1st, Strava disabled access for 3rd party apps to connect to Strava data for the vast majority of 3rd party apps on the market. What are 3rd party apps? Simply put, they are ones developed by other companies to interact with Strava services. For example, the ability for Wahoo Fitness to upload directly to Strava, or for various Android apps to upload to Strava. Applications do this through what’s called an API (Application Programming Interface), or essentially a way to communicate with Strava as a site from a programming standpoint. Virtually every technology platform on earth has API’s (or similar methods) to connect to them, be it Strava, Garmin, Apple, or Microsoft. Everyone. The degree to which API’s are offered varies from company to company."

http://www.dcrainmaker.com/2013/07/c...tionality.html