The Indicator
Esqvair's Relative Strength Index is the another modification of very popular Relative Strength Index by J. Welles Wilder
The Modification
This version uses de-lagged price as source, de-lagging price improves performance of the indicator.
How to use
The ways of usage are same as original Relative Strength Index that means you can use it as overbought and oversold indicator or as divergence indicator.