Phones are quickly adding "personal trainer" to the list of roles they can perform for their users. The potential for note-taking, record keeping and stat tracking is immense, as there's a good chance you won't forget your device when you go out for a run or hit the gym.
Sports Tracker works by letting the app use your phone's GPS signal to determine distance and speed travelled while doing activities like cycling, running, swimming or rowing. The app also takes input like heart rate, allowing you to journal your progress across a number of days, further supported by the optional Bluetooth heart rate belt that's on sale from their website.



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