The interface must be user-friendly and provide an intuitive user experience. How to Build a Car App - But let us proceed to the main topic of CarPlay. To make your own car app for Apple CarPlay you must consider several special aspects. The APIs for the creation of an app based on CarPlay are not available for any developer. Furthermore to get these APIs you must have access to special Apple's MFi Licensing Program.
This additional formality despite being just a formality plays an enormous role for you as a potential developer. Finally to get official access to the APIs you must be a representative of a company with its manufacturing facilities and developmental mobile app development service potential. All in all I can argue that the creation of an application for CarPlay is not the easiest task and this option is definitely for real profit.
Best OBD Scanners and Apps to Do It Examination of the car conditions using an OBD system requires the usage of special scanners or OBD car doctors which are pretty difficult to use because of the complicated interface existence of trouble codes (usually common drivers do not clearly understand them). So for now the car tracker application development for the users is a highly prospective field.