SWB Grid 4.1 is the best martingale expert advisor for forex trading.
There is no specific rule about using this EA. Test it and find best setting for you. But I think default setting is good enough.
I personally use this on GBPUSD M5 timeframe.
Use micro lot (0.01) for margin at least $2000
Here is how it looks on backtest:

There is no specific rule about using this EA. Test it and find best setting for you. But I think default setting is good enough.
I personally use this on GBPUSD M5 timeframe.
Use micro lot (0.01) for margin at least $2000
Here is how it looks on backtest:

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