With this app (featuring 74 stockbrokers) you can make educated decisions on whether to take action or to avoid taking action on the stockmarket. This app can be used to calculate the potential profit of your positions, offers support for both long and short orders and is currency independant. Also, in light of your transaction, fees from different brokerage firms can be compared. It currently covers all significant USA, UK, australian and dutch brokerage firms, but brokers from other countries can be used as well.