Purchased this mainly to pair a new TPM sensor for my Lexus is300h. Got the sensors for a fraction of the price of what a garage or main dealer wanted. But had trouble finding anyone to pair it to my car, so decided to do it my self. Easy to do and has other uses. It will also work on my wife's car. Yes there is a subscription to pay on the app, but when totaling it up when I inevitably have to replace the other 3 sensors at some point it is still a far cheaper way to do it.