Calc of Clans is a free Android app developed by Matty De Bie, designed to be a companion app for the popular mobile game Clash of Clans. The app helps players keep track of their current in-game statistics and makes it easy to see what they still need to upgrade. With this app, players can quickly check how many resources and time they need to upgrade their base.

The app provides a simple and user-friendly interface that allows players to easily navigate and access the information they need. It's a great tool for anyone who wants to stay on top of their game and make sure they're not missing out on any important upgrades. Overall, Calc of Clans is a helpful app for Clash of Clans players who want to maximize their gameplay.