Easy Aroon is based on the Aroon Oscillator which is a trend-following indicator that uses aspects of the Aroon indicator (Aroon up and Aroon down) to gauge the strength of a current trend and the likelihood that it will continue. The Aroon oscillator is calculated by subtracting Aroon down from Aroon up. Typically when the oscillator moves above 50, it indicates a strong bullish trend. When it hovers around 0, it indicates the lack of a definitive trend. And finally, when it breaks below -50, it indicates a strong bearish trend.