Using that you can also try out alternate scenarios like "what if I converted x00k of my savings to an annuity in exchange for a predictable cash flow" and see how it affects your withdrawal rate.
MaxiFi Planner is the best consumer tool I know; my advisor also uses it. A puzzle that's too hard for it, making me want to script scraping its reports: Should I choose an annuity for part of my TIAA-CREF retirement savings? Even if one understands that the answer is generally no, there's always a number that flips the decision. TIAA annuities pay more than market, but enough more? There's an annuity paradox that programs like MaxiFi Planner reveal: Even a poorly priced annuity lets one plan to spend more. On the other hand we want to optimize our daughter's inheritance.
Economists optimize varying notions of "utility". The above is a game, scoring what one gets to spend adapting to market conditions, taking into account the inheritance as one's year of death varies. This is beyond any planning software I've seen, yet it's exactly the game I will instead play out badly by hand.