Quick answer
Every Search For The Needle tool in one place: class odds calculator, run timer with PB log, gamepass planner, Infinite Bag break-even, and the Chapter 2 puzzle solver.
Four calculators and one solver cover the decisions this game actually asks: spinning, timing, buying, and solving. Each tool shows its assumptions and the date its inputs were checked.
For Search For The Needle tools, use the quick answer first, then check whether the topic affects a code reward, event, item, unit, map, build, value, or upgrade path.