Fitbit's new fitness tracker is said to be the cheapest in the business, but users can not buy the portable device themselves.

The Fitbit Inspire is only available to employees and members of the health insurance. The plan envisages that the fitness tracker will be fully subsidized and spent by the majority, be it by a company that wants its employees to stay active or a health insurance company that wants their members to monitor their welfare.

The Fitbit Inspire features the most basic fitness tracker features, including activity and sleep tracking, burn calorie monitoring, movement reminders, goal celebrations, and mobile notifications. It is waterproof up to 50 meters, promises a battery life of up to five days and is available in black and sangria.

There's also a slightly more advanced version called Fitbit Inspire HR that adds 24/7 heart rate tracking, sleep phase monitoring, training modes, tempo and distance tracking, and cardio fitness levels. It is available in black, white / black and purple.

For the fitness tracker no price is given just because the users do not have to pay for it. According to Fitbit, it is the cheapest device so far.

In an interview with CNBC, Fitbit CEO James Park said the company's sales are increasingly dependent on its business customers. Now Fitbit has 6.8 million patients, employees and health plan members who are enrolled in Fitbit fitness programs.

The Fitbit Inspire is published following the September launch of Fitbit Care, aimed at employers and health plan providers. The platform also provides care groups to users' health data if they agree to personalized fitness recommendations, and also provides users with access to personalized care plans through a health coach.

The Fitbit Inspire is nowhere near as advanced as the Fitbit Versa, a fitness tracker that behaves more like a smartwatch compared to the company's previous devices. The Fitbit Versa is the best-selling Wearbit from Fitbit. 1 million units were delivered in less than two months after the sale in April. Due to the company's trajectory, the Fitbit Inspire may be the most important product.