Refer to the related Apps, it discloses the calories taken. How the product can track the calories taken actually?

Fitbit Flex Wireless Activity + Sleep Tracker

Fitbit Flex Wireless Activity + Sleep Tracker

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2 Answers from the Community

  • Answer

    I use my fitness pal app to register my food and it talks to the fitbit app.

  • It estimates calories burn, base on the personal profile you set up on registering with Fitbit.com.