Tutorial How to Hack Gems, Money, Treats in Dragonvale you find on this site
http://freehack4you.com/dragonvale-cheats-hack-tool-v3-0-download-android-ios/

Dragonvale Hack Tool v3.0 possible is adding to your account database resources Gems, Dragon Cash and Treats but you must run on your device debugging USB mode.

(Hack compatible operating system with Android and iOS.)
Smartphone, Tablet, iPhone, iPod, iPad

Instruction (step by step)
How to get free Gems, DragonCash and Treats with DragonVale Hack

(1) Connect your device to computer with USB cable, enter the (setting - programming options) and run the USB debugging mode.
(2) Run the game on your device
(3) Run the Cheat to Dragonvale on your computer
(4) In application window select your operating system Android or iOS and click button Detect Device
(5) In the main window click Open Hack, write amount of Gems, Cash and Treats and click button Add Resources
(6) Done, enjoy the game!