...causing me into a YouTube rabbit-hole binge watch of a lot of James Shack's videos...
In one video in which he argues the 4% draw-down is outdated, and that your own retirement needs need to be calculated more carefully, he mentioned a software platform, namely Timeline.co, that he uses with clients. Upon searching it, sadly, seems a professional use product only.
But this got me wondering what, if any, pre-made spreadsheets/apps/software users here use?