Can I use my iPhone gps on a wifi-only iPad
I'm considering buying an iPad. I'm aware the wifi-only models don't have a GPS chip and would normally locate using wifi location data. I realise that buying a cellular model might resolve the question, but I would compromise on other features for my budget.
Therefore, if I tether a wifi-only iPad to my iPhone, can the iPad use the iPhone's GPS data to locate (if, for example, there is no other available source)? Would that work with any navigation/mapping app, or is it restricted (eg to Apple Maps)?
If not, are there reasonably-priced bluetooth or plug-in GPS devices that work with the wifi-only iPad that work with any mapping/navigation app?