Strength Box is a very simple indicator to understand and anyone can use it. This is a totally free version. I am working on other indicators and Expert Advisors and I will add them to the Market soon.
This indicator shows trends and is based on Relative Strength Index (RSI)
20 and 80 - danger area (confirms trend pull back chances)
30 and 70 - thinking area (price pull back chances)
50 - neutral area