This is a Black 76 Model. Slight tweaks here are there to accommodate the Indian market. But the crux of it is that we work with Future prices instead of spot. You can learn more in https://trade.sensibull.com/optionscalculator
Hi @Chirag1 - That is highly unlikely. It’s functional. We have around 100+ beta users a day on that page. Can you try this URL too, please? https://trade.sensibull.com/analyser
Also can you please send me a screenshot of the error you are getting. Thanks.