There are a few differences: Metromile is an insurance company that uses devices which plug into cars to track mileage and charges by the mile. CMT/TrueMotion aren't insurers, they provide apps/SDKs to insurance companies which track driving behavior. This tracking is used to decide on how much to charge for insurance, but this is just a factor applied on top of someone's traditional premium, that is, CMT/TM can't really support pay-per-mile insurance