If you aren't a keen cyclist then you may not have heard of it but for
those of us who do like pedalling around on two wheels it isn't an
exaggeration to say that the app has been revolutionary.
Utilising the GPS (global positioning system) software on your
smartphone, it enables you to record your ride, and then see an accurate
line of the route you have cycled on an electronic map.

http://www.bbc.co.uk/news/business-41186824
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