This app was mentioned in 2 comments, with an average of 1.50 upvotes
It's not the same, but if you want something to link up your location in fsx to an android tablet/phone I would check out https://play.google.com/store/apps/details?id=com.connect.fsmovmap2free It's really neat and Alexander said the pro version may connect to Google earth but I just use the free one. Check it out!
IIRC FSUIPC can send GPS data, which can be directly used by Google Earth's GPS feature. I haven't gotten it to work.......but then again, I haven't really tried that hard. If OpusFSI can send GPS data to a Garmin, then it'll probably work with Google Earth too, in a similar fashion.
There's also Plan-G, but unfortunately flying transpacific results in a straight line that cuts across North America/Eurasia, because the map's centered on the Prime Meridian, and the International Date Line on both ends doesn't connect. It can display a route, but I've had some annoyances where it'll display a waypoint that's on the other side of the world (e.g. it'll give me ABBEY in Australia instead of ABBEY in Hong Kong, even if the coordinates in the *.pln are correct).
There's FSMovMap2 for Android - it can display basic flight data like altitude/speed/etc, as well as a route if you load it up on the desktop application.
No idea about iOS.