iOS

Which app are you using?

 

And which Bluetooth adapter?

I don't have one yet. Got a vag com cable instead. But what I read is as long as the elm 327 is v1.5 or v1.4 it will work with most apps. Wifi only for ios. There are other adapters now like obd link mx Bluetooth and wifi but the apps are written for elm327

Okay I'm oblivious to this what does elm mean?

Elm327 is the name of the first Bluetooth obd II adapter. Its been copied a lot in recent years and now has wifi capable versions.

Iirc they were first used with elmscan

I've been using blue driver for a few years and like it, but it isn't as capable as Torque, and it costs around $100 now for the adapter, so I have a hard time recommending it. Haven't used any of the newer stuff though I will probably be trying some of them here pretty soon.

Oh right, looking for free or maaaaybe very inexpensive.

I mean free app, not free Bluetooth adapter.

This is the OBDII tool I bought - works great. //www.amazon.com/gp/product/B005NLQAHS/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

 

I bought torque pro software and have been happy with that, too.