The Non-Repainting SuperTrend Forex indicator is a popular and free MT4 indicator that is useful for traders of all levels. The indicator is easy to use and interpret, as it plots a line on the chart that changes color depending on the trend. When the line is green, it indicates an uptrend, while when it is red, it indicates a downtrend. The indicator also gives traders the ability to customize the settings to suit their trading style and risk tolerance. The indicator is easy to install and use, making it a popular choice among Forex traders.