Fitbit has launched its first true smartwatch, the $300 Ionic. With support for third party apps, but notably no cellular connection, the Ionic is going head-to-head with the Apple Watch, by aiming to provide a premium user experience, as well as challenging the also expensive fitness-focused watches from the likes of Garmin. Due for release in October, the Ionic will be the most expensive Fitbit device sold to date. While $30 more expensive than the first generation Apple Watch, it is still cheaper than Apple’s second generation design – the one in which the vendor finally nailed the hardware and software to provide a strong user experience. By most accounts, Apple leads the smartwatch market, and so Fitbit has a…