This is a simple RSI with applied Bollinger Bands. The BB may help spotting "hidden" divergences or "fake" divergences. For instance: in an uptrend we have a high followed by a higher high, the plain RSI shows a divergence, adding BB we see that the first (higher) RSI high is inside the BB, while the second (lower) RSI high is outside the bands, this would be a fake divergence. The use of the indicator should be straightforward, for any questions feel free to write me a message