The legitimate Carista app is designed to work with an OBD2 adapter (like the Carista EVO) to perform the following:
Monitoring real-time vehicle parameters such as engine health and battery voltage. Risks of "Modded" Versions Carista OBD2 Modded
Unlocking "hidden" manufacturer settings, such as enabling windows to open via the key fob, disabling seat belt chimes, or adjusting daytime running lights. The legitimate Carista app is designed to work