Stochastic is applied to price, it's different than StochRSI which is Stochastic applied to RSI
This indicator does not include StochRSI
Stochastic is powerfull to catch divergences, especially hidden divergences
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.