In May, Google Health launched as a replacement for the Fitbit app, making the fitness brand's hardware operate under the search company's Health arm. The initial versions of Google Health did work with Apple Health, however, it was a one-way street. The integration meant that Google Health could import data from Apple Health, including recordings from an Apple Watch, but not write to it. Now, Google Health properly syncs with Apple Health. The change means that data that has been recorded in Google Health can now be shared to Apple Health.