Top Shape-Up Apps
8 of 10
Tempo Magic Pro
($4.99; lolofit.com; for iPhone, iPod Touch, iPad)
This lets you adjust a song’s tempo to match your workout speed without making it sound at all weird.
So for us, Katy Perry’s E.T. sounded just as awesome timed for a leisurely warm-up as it did revved up for a sprint.
Next: MapMyFitness
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