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No Personal Trainer? Here Are 10 Workout-Tracking Apps to Keep Yourself Accountable
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C25K

Cost: Free; ad-free version is $2, premium subscription is $10

Training for a 5K race or want to get into long-distance running? By tracking and analyzing your metrics every time you go for a run, C25K devises a personal fitness plan that gets you in shape for a 5K.

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