GameGuardian is an application which enables you to obtain an advantage in Android video games by editing certain parameters. You have to keep in mind that your device must be rooted in order to have this app work. The app also requires super user rights. Once you have everything up and running you must select the process of the application you want to tamper with.
After you do this task the next step is to search values using the hexadecimal editor. GameGuardian also provides a function that looks for values inside encrypted data. After you find what you're searching for you can edit that address location and increase stuff like money, life, experience inside the video game. Another interesting feature of this application is that it comes with support for emulators like PPSSPP, ePSXe, GameBoy and so on.
Use it at your own risk !