The wait is over. There's finally a new Fitbit . Five years after acquiring Fitbit , and three years since it released the Charge 6 , Google is finally expanding into a new phase of fitness tracking . With its screen-free design, the new Fitbit Air could be the first device to threaten Whoop's grip on this category, thanks in large part to Google's intuitive, user-friendly software. The First Screenless Fitbit The Fitbit Air is Google's most minimalist wearable yet. There's no AMOLED display, no haptic side button, and none of the visual feedback loops that have defined Fitbit devices (and most fitness trackers) for years. Instead, it's a slim oval device that fits into a wide array of bands. It looks and functions more like a Whoop band than a traditional tracker with a screen. Courtesy of Google Google claims the Air is 20 percent lighter than the discontinued Fitbit Luxe; it's meant to disappear on the wrist rather than compete for attention.…