Evening,
AVARE is a great app for aviation, during my flights it proved to be a great tool if your tablet has a built in GPS (The Galaxy TAB 3 built in GPS proved to be useful below 11,000ft before it lost its signal) as it shows your aircraft position with great accuracy along the enoute (IFR or VFR) and approach plates and includes a timer for holds or LOC approaches along with the ground charts to help with your taxi and all charts are updated and correct to match Jeppesen ect...
However it has its limitations (expected given as its free)...
There is a I/O plugin that (in theory) connects the app to the Flight Simulator, however I have yet to get a fully successful connection that shows the aircraft along the IFR Low/High or VFR area charts or approach plates, the full system does have some enroute charts for the world but its restricted to the US for current approach/departure plates.
You also need to be sure you have enough storage on your device for the downloads ( My own Tab 3 includes 8gb of built in memory but I had to put another 8gb via a SD card to have enough capacity just to have the US (no EU or Canada).
Just for FS flying I would stick to something along the lines of the Avialsoft EFB, there are some moving map apps on the Google play store for Android (cant tell you about Apple) but they are more basic and don't include any app charts. I will of course continue to use AVARE whenever I fly into the US in the real world but I dont use it for the Sim.
The link below will show you a example of a moving map for use with a flight Simulator
https://play.google.com/store/apps/details?id=com.connect.MovMap
All the best
G Sproson