Forex trading and Binary option have some similarities but they also have differences. Among the similarities are being able to trade online and both users can start trading with a small amount. They are also profit from the movement of the market where users are guessing for the direction of market.
The difference is that binary option have fix risk and fixed rewards and traders are shown upront their earnings if their prediction is right unlike the forex trading where you never know your profit until your stocks were all sold.
The problem in binary options is that, although it is a system that simplifies the way of doing decisions, it is also a system that limits the number of possibilities that the investor has, demanding that decisions be made in a more agile way, since there is a short period of time to decide whether the price will go up or down.