Hi vincenzo,
The Top 10 app robots are traded in the app with the default lot size of 0.1 lots. If you open the downloaded robot with notepad you can see the Entry Amount is set at 0.10. The exception is with silver. With silver some of the robots are traded in the app with 0.1 lots or with 0.02 lots. If you are going to trade silver I would have to find out which ones are trading with 0.02 lots.
Alan,