Photo: Courtesy of DigifitBy Catherine Price
The Digifit Connect 2, a transceiver you stick into your Apple device, collects data from a suite of wireless sensors-including ones for your bike and sneakers-so you can adjust your exertion level to reach your fitness goal.
$50 for the device, $10 for the app; DigiFit.com
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Photo: Robert GauthierCalorie-Burning Power
The Gruve uses your body's vibrations to measure how many calories you're burning during everyday physical activities (like wrestling with laundry). Bonus: If you sit still for too long, it vibrates to remind you to get moving.
$179 (includes a one-year subscription); Gruve.com
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Photo: WithingsBlood Pressure
With Withings' Smart Blood Pressure Monitor, you can upload your readings to an iPhone, iPad, or iPod touch and graph trends over the course of a day or a month or a year. The device makes it simple to share your data with your doctor via e-mail.