Usually it is $99.95, on sale now on Amazon for $69.95. It uses Bluetooth and works with IOS and Android. You can pull codes, clear codes, clear check engine light, and the feature I find very useful is that it tells you if your car would pass emissions testing (if not it tells you why not). I believe that new version of app also allows you to register new battery and many other things.
BlueDriver Bluetooth Pro OBDII Scan Tool for iPhone & Android
https://www.amazon.com/dp/B00652G4TS..._jjvVFbKDB2RXW
Website
https://www.bluedriver.com/products/...iver-scan-tool