It is not a secret, that crypto exchanges have different prices of one coin among themselves.
That opportunity allows people to earn 1-7% on each transaction. The main question is how to find this gaps.
I want to present you our service - https://goo.gl/4sv9Kj
Coinspread is a service that allows you to find spreads and gaps between changes automatically.
Coinspread analyzes 39 exchanges and collects 1500 coin pairs having spread on different exchanges for you to make a profit.
Just sending your coin from one exchane to another, you will get profit.
The main difference with other services is that coinspread shows you reverse way of your coins. It means that you can bring coins back from exchange 2 to exchange 1 and close the "arbitrage circle".
Check out free demo right now! and say what you think about it
best regards