A new company called Flexit lets you pay for gym time by the minute, allowing you to walk into a nearby gym when you’re traveling, for example, and slam out thirty minutes of sweet glute action before dinner. The service is like Uber for gyms in that you only pay for the time you are inside the gym and you don’t need to pay monthly fees or a flat rate per visit.

Created by Michael Rojas, the co-CEO of Iron Grip Barbell Company, the service already has 400 gyms in the United States and plans to expand over the next year. They’ve raised $750,000 in notes.

The company launched today.

“FlexIt’s corporate team has superior industry reach, best-in-class technology and a concept unlike that of its competition,” said CEO Austin Cohen. “FlexIt’s corporate team has deep industry experience in fitness sales and marketing, fitness club ownership, and early-stage venture and venture capital aspects of the business. It’s relationships with C-level leaders at the largest gym chains in the country provide FlexIt with industry insights and access to best position it for success. These relationships have resulted in FlexIt having on-boarded a meaningful club base at a faster rate than any of the competition.”

The fact that Rojas has been selling barbells to gyms for 26 years definitely helped them scale up and the company has gyms in New York, DC, New Jersey, and Illinois as well as three other markets. They are launching an eighth market in two weeks.

Rojas has found that most modern gyms are amenable to the idea and they’re offering everything from classes to personal training via the app. Because it is paid by the minute they also get interesting new data that traditional gym membership plans don’t offer.

“Consumers seek more choice and control over how, when and where they consume, FlexIt is the logical solution to this pain point in the fitness space,” he said.