The Just Calculate It application spreadsheet is probably the best help you can get while playing many of the RPG games on your iPhone or iPod Touch

If you play the games on an Android, you can download Just Calculate It from the Android Market

When you've bought the application and downloaded it, you need to open an account to make the most of the website

When you've opened your account and you're logged in, go to World War from the homepage menu. If you log in on a pc, on the left hand side you will see fields where you can enter your level and number in your alliance. Next, on the left hand side of the page, you should enter how many of the different buildings you have. After that, you should go to the units pages and enter the amounts of different units you have.

The Defence buildings with best ROI (return on income) are highlighted in Blue. The Income buildings with best ROI (return on income) are highlighted in Green

When you purchase a building the price increases by 10% per building. By using Just Calculate It, building price increases are automatically calculated for you

Units for attack and defence are also highlighted, saving the headache of working everything out for yourself

In addition to this, when you enter buildings and units, everything is entered into the right hand column, calculating your total attack and defence points

Also included is a codes database where you can post your code and gain more allies by their codes. You need to re-post your code every 7 days

The Just Calculate It application is available to download from the iTunes Apps Store at a cost of $1.19 which is worth every cent