Bounce Strength Indicator (BSI) shows the strength of bounce. It now works in trend and uses Tango Line calculations.
There is no difference in the basic concept, but I tried to remake it from a different angle.
I used the width of the range as a measure to measure (like a classical oscillator). This version does not use the width of the range. It uses the deviation from the center line instead. And the center line is the moving average of the Tango Line.