It employs the famous .
This robot will buy when price falls below the lower , and sell when price moves above the upper .
I've only tested it on the S&P 500 , though you could try it out on other assets to see the backtest performance.
During the recent COVID-19 bear market drop , it produced several buy signals on the S&P which I followed, and made some nice gains so far.
I still think this would make a better investing strategy (buy undervalued / sell over-valued), rather than a trading strategy.
I use this robot for my long term portfolio.