I purchased the Bad Elf Pro GPS http://bad-elf.com/products/be-gps-2200/ for use on my iPad mini with wifi only. I originally planned on purchasing a mini with a data plan but thru work I received an iPhone 5 with tethering and unlimited data so in order to force myself to not get a data plan, I went with wifi only. I know you can use the iPad with cellular without getting a data plan and use the gps but it is Assisted GPS and I know I would end up getting frustrated with having to set up tethering each time I use it and get a data plan. The hook up of the Bad Elf Pro could not be easier. There are only three buttons on the device. One handles power and lighting. The second handles bluetooth and the third the GPS signal. The real power to this thing is in the Bad Pro GPS app for iPhone or iPad. There you can make setting changes, update firmware or even log your trip for later export to wherever you need it. This GPS gives you more options than most other bluetooth GPS units. I live on a large hill with lots of trees and usually have trouble with the Agps in the iPhone keeping a good connection. I have had no problems at all with the Bad Elf. This unit also keeps a strong signal indoors. It is also good for pilots as it does altitude also but cannot be used as the main altimeter. The battery life is very long on this unit. If you are running bluetooth only, no light and not tracking, it can easily go 15 hours connected to your iPhone or iPad. Also, it can connect up to 5 more iDevices at once so everyone on the trip can follow along. Also, if you are using your iPhone for tethering, it allows you to use the data from the phone while using the GPS data from the Bad Elf so if you don't have a completely installed navigation app, you can still get your data. The only downfall for this unit is the rubber plug that goes in the charging port is very flimsy and will not stay in, even brand new out of the box. Not a big deal for me. Overall this is a great unit and I recommend it for anyone with a wifi only iPad or iPod touch, or anyone who wants a much better GPS for their phone. I recommend buying it direct from Bad Elf in the link above. I was able to search and find a free shipping option coupon code and got it two days later. This is a new device that has just been released and with firmware updates, it will only get better. If you are planning on buying a wifi iPad but thinking about getting a data one just to have GPS, I recommend going wifi and spend the extra $20 for this device.