Hi @ksh Welcome to Dhan community.
Dhan does provide a dedicate app for Options Trader, more on that is here: Options Trader - Options Trading App Built for India | Dhan
In addition to that, we are building Strategy Builder on Dhan. It will be coming soon on web first, in a few weeks.
Our APIs are available for any platform to integrate. Recently wrote about Sensibull here: Sensibull Integration - #2 by PravinJ