One review site I looked at gives it a 1.7 rating out of 5. Seems like another software program designed by people who don't actually trade.
Quite possible. Sosnoff may lose all of his capital markets haul by trading vol. He's the worst trader I've ever met. Now, TOS/Schwab has some benefits. Integrated futures/FOs in a single account. Beta-weighting on the Monitor page. They know enough to prioritize it. Cross-instrument/intermkt what-if is also a plus. Webull offers Hanweck but what good it is if all that you can stress is a calendar/diag at expiration of M1? Individual implied vol under calcs so that you're not too optimistic on your stress. Global vol-shift or individual legs. System default for static pages is individual. A decent vol-scanner which is essentially only useful for term-structure but that's really all any of them can do. IBKR is better in a number of ways; SPX vol overnight, a true VaR/ES (shortfall), but zero what-if capability. For retail there isn't a lot of choice here. BD's don't think you need it and if you do you prob have access to PB. They also don't want to be responsible for their beta vals. At least Schwab is focused there.
But are you actually making money with it? Most active traders seem to try it and realize theory won't necessarily make you money.
i don't think making money is a software thing it's a person thing - people make money without any software.
Most of the money made in trading is in making markets. One fund might use it but they may have other trading edges to offset TOS disadvantages.
You should be concerned about three things: 1) Fill quality 2) Data/analytics quality 3) Commissions Arguing the merits of the Greeks isn't worth our time.