OBD2 scanner apps for smartphones

I don't know much about that I've heard of the ELM business talked about before not in any kind of a bad light I guess there's some kind of problem possibly with the software because it's maybe Russian. But seemingly the best bang for the buck is the AP200 thingy. If you wanted to pay a monthly subscription the carista seems like it's the way to go with most modern cars it can bring up TPMS sensor identification numbers for each wheel generally able to program said to the car all of that sort of thing I don't know what the monthly subscription is but the carista if you really need to play with the TPMS and some other things might be a good thing to have and just turn on your subscription on an as needed basis if you don't do much scanning and then having the AP200 outright and it can bleed your brakes and read all of your codes and do most things except the TPMS business which apparently the carista can do very well and it has interfaces that look just like the TIS or Toyota software business so that's a plus The AP200 is 56 bucks and I imagine the carista hardware piece is probably $40 or something like that and I don't even care what the monthly subscription is because I wouldn't use it but every few years probably maybe a little more often working on other cars but we'll see In those two devices you don't have anywhere near an MK 808 or any of that kind of business and shouldn't need it.

 

I haven't used Car Scanner myself but it seems pretty decent from what others report.

We have this thread that compares a bunch of different offerings, testing them on Prius gen 2. So the thread's not absolutely specific for gen 3, but it should give some useful comparative info.

Gen2 OBD2 app review | PriusChat

 

I have on my phone:
Car Scanner
Hybrid Assistant
Torque
Dr. Prius
Scan Master
And OBDLink from my OBDLink MX.
All are fine.