Questions re: GasTracker
 

I currently have an iPhone and use GasTracker. As I understand it it's a link to my online account not a self contained stand alone. I am considering going back to a Galaxy Note. Does the aCar (I think it's called) do the same? I know all my data already here won't be touched but if I switch to Android will it all be seamless as it is now or will I need to enter both on the phone and here? Hopefully not the dumbest question ever asked.

Not a dumb question at all.
If you switch right now- aCar isn't currently setup to sync with Fuelly/GasTracker.
But it will be, soon.
In the meantime, we have the mobile-friendly Fuelly website- m.fuelly.com, as well as a quicklauncher style "app" in the Google Play store that'll allow you to continue adding fuel ups to your fuelly account. You won't get the pretty graphs, but all your data will remain here for when aCar finally does get the update.