The Premium version is an improvement of the Pro version which is no longer supported. Anyone who bought the Pro can request a free Premium license via email at smartapps4me@gmail.com. Thanks to the information provided by the OBDII diagnostic, Smart Control is able to calculate the consumption, detect the beginning and the end of every move and store trips; in addition, it can calculate and track performance data such as power and speed up or braking etc. For the latest generation of the Mazda Skyactiv engines, the app is able to display the data related to the regeneration of the DPF filter and monitor its activation. It's important to note that the Premium version does not guarantee greater compatibility than the Lite version. So, the users interested in buying, have to check the proper connection of the Lite version with cars. The Lite version provides a range of functions and for less demanding users is a good on-board computer (OBC). The Premium version was created for more demanding users who want an advanced OBC. The graphics of the Premium version has been optimized and improved both in aesthetic and features to make your driving experience even more enjoyable. Through the Head Up Display function (HUD) of the Live Data you will be able to read all the information in your field of view. The functions of the two versions (Lite and Premium) are absolutely equivalent, except for the limitations foreseen for the Lite version. To find out about the features and differences between the two versions, visit the Versions page of the app website by clicking the following link: https://www.smartcontrol-4me.com/versions