Not impressed at all. I plugged in and did a scan. All it told me was there were no problems detected. I checked further into the app and it does do a live reading, but only for speed, O² voltage, engine load, and RPM. I have guages that already tell me 2 or those, engine load is useless, and the O² sensor is the only one I care about that it shows. There's no live readings for fuel level, for MAF sensor, throttle body percentage, and many other sensors are missing that cheap code readers find.