[spielnicht]

Best option for Android is Bimmerlink. It's a 1-time purchase (at least at the time I bought it). Carly is also very good - but you need to buy their OBD connector for best results and it's a 1-year license that must be repurchased.

I have both of these, as well as an Autel and INPA. I much prefer the latter two. INPA has the biggest learning curve, but is the cheapest and packs the most features.