Download Calculator for Clash of Clans
How many gems does it need to finish my building?
How much does it cost to upgrade 100 walls from level 7 to level 8?
How many gems does it need to fill my gold storage?
All these question can be answered fast and easy with this application. Just set your desired values in the drop downs and text fields and watch how costs are rising into the sky.
This is a fan made app and graphics used are not owned by me. Sorry for the copyright infringement bra. This is no hack, but a useful tool to speed up the game flow.