" Real plan is not showing up on my 740b gps ipad ..."
Not sure what this means exactly, but as I recall, Real Plan does not work on any of the 7XX iFly devices because they don't have the processor power to accomplish the task.
It should, however work on an iPad running iFly GPS.
You should be able to run Real Plan on another device (iPad, iPhone, Windows desktop/portable, or Android) then sync the flight plan from that device to the 7XX iFly GPS.