Tradeasy is software that allows you to automate your strategies. That is, from the idea to the robot. You can download those robots if you are premium so, you can use them with your broker. However, tradeasy does not offer broker services.
To use the robots, you have downloaded from tradeasy, you need a MetaTrader 4 account, so you will need a broker that operates with this platform.
There exist thousands of brokers that offer this tool. We have used IC Markets to make our simulations.
