Hint: It can be tedius when you insert all the information for the very first time. So you can just use the function "Import Max. Town Hall Level" function of the menu Town Hall. After that, just change the few things that is not maximized yet.
After that, you can use the menu "Calculate" to know, among other things, how much time/resources you still need to maximize your village for any town hall level:
If you are interested in the APP, here is the link for download. Please, if you have any comments/suggestions or if you notice a bug, I'm all ears.
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