So far, you have learned how to use the motion and GPS sensors on iOS devices to build a workout app called IOTFit, with the capabilities to track activity data (steps, altitude, step count) and display the user's workout path on a map. Additionally, you’ve learned how to store this data to a property-list (.plist) file inside the app’s Documents folder.
While it is useful to store data within one app, you can help the user even more by saving the data in a way that is accessible to other workout apps. For this purpose, you ...
