Tap Zoo Android Hack

Gold Coin :
Search your current value Dword.
Buy Something
Search lesser
Search until you find the same current value.

Star (Premium) Hack:
You must have several stars 5-10,
Search you current value Dword.
1. Buy / Instant Buy something with star
2. Search lesser
do no 1 and 2 above several times until you find your current value.