O k'd is an app-based personal training platform that allows clients to access workout programs and fitness guidance by certified personal trainers. The specialty of this app is that users can customize the workouts based on their individual needs, without having to make an appointment with a physical trainer. It puts the user in control, allowing them to pick different kind of workouts, adjust intensity, and pair their fitness routines with activities like running, or cycling.

The trainers employed by O K'd have passed a stringent exam and have years of experience.