OptIndia Screener filters historical NSE index-option chains and reports the structures that match the criteria you set. It does not recommend trades, does not rank "best" ideas, and does not take your circumstances into account.
Every figure is derived from free, public NSE end-of-day settlement data for a historical date that you choose. It is not live, not executable, and not a quote. Probability of profit is a model output from the chain's implied distribution, not a forecast and not a historical frequency.
Options carry the risk of losing more than the premium paid. Undefined-risk structures (short strangles and straddles) can lose an unbounded amount.