The regular options chain shows you data like strikes, premiums, open interest, Greeks. However, it leaves all the decision-making to you - which strike, which expiry, how many legs, which direction.  

Option Strategy sits on top of that. You start with your view (bullish, bearish), not with the chain, and the ArihantPlus readymade option strategy tool will give you structured strategies that fit that view, with the payoff already calculated. The chain is still there; you are just no longer starting from it.