Download tool :- http://www.newgameshacks.com/2012/12/fun-run-multiplayer-race-cheats-hack.html
Fun Run is a multi-player race game on both Android and the iOS mobile platforms, so you can download it for free and play against both Android and iPhone users (as well as the iPad, and most other tablets). It doesn't seem to be available on Amazon.com, so if you have a Kindle Fire, you may be out of luck for a while.
After downloading and opening the game on my HTC Thunderbolt, I was given the option to Register or Login. On the registration page a Username is required, but there is an option for providing you Email address and setting up a Password. This information is needed if you wish to sync your data across multiple devices.