I'm about to buy a end hand..well 3rd hand Meta Power and the current owner doesn't know whether there is an app to link to the bike with, where you can change assistance in each mode e.g like mission control for the Specialized. So my first question is whether there is such an app? Secondly if there is an you link via bluetooth do you need a special code for the bike? and Thirdly if you do need a code and the present owner doesn't know it, is there anyway to find it out? Thanks