Google has completed its $2.1 billion purchase of Fitbit, quite a year after the deal was first announced. The EU approved the acquisition in late December, clearing the way towards Google’s ownership over what's perhaps the best-known brand out there for mainstream fitness-tracking devices. Fitbit co-founder and CEO James Park reiterated during a letter today that Fitbit would still be device-agnostic, making products that employment with both iPhones and Android devices.

Both Park and Google’s Rick Osterloh also reiterated that this deal was always about “devices, not data.” That’s shorthand for Google and Fitbit’s pledge to stay user data private going forward; Park said that “Fitbit users’ health and wellness data won’t be used for Google ads and this data are getting to be kept break free other Google ad data.”

It’s not clear yet exactly how Fitbit will change under Google’s ownership; so far it looks like the brand will still be distinct from Google. That’s how things looked when Google purchased Nest also, though — the smart home brand eventually lost its status as a separate company through and is now just a sub-brand of Google’s hardware division.

When the deal was first announced, Osterloh noted the deal was a chance for the corporate to form “Made by Google” wearables, and comments from both Osterloh and Park made it sound as if future devices would run Google’s own Wear OS software. Whether meaning Fitbit’s software goes to be completely replaced by Google’s on future devices remains to be seen.

Fitbit didn’t take the last year off, releasing the Sense fitness watch back in September. It’s probably the foremost advanced device Fitbit has made so far, adding during a host of the latest health-tracking features like EDA and skin temperature sensors also as an updated pulse sensor. The Sense also has much better battery life than Samsung and Apple’s watches, though it’s also tons more sluggish when launching apps or moving through its interface. The Sense also now has the excellence of being the last major product Fitbit released before Google took over, so we’ll now be looking to ascertain how long it takes before Google’s influence starts exposure in new products.