Barbell Plates is a simple app using which you can find out the number and kind of barbell plates you require to achieve a desired weight. You save the number and types of plates available to you and enter the desired weight. The app will tell you based on your plates, which ones are to be used.
You can also calculate the total weight on the bar by entering the plates that are currently loaded on the bar. The app also takes care of the bar weight for you.
The app works in both Kilograms and Pounds plates.