Choose what to get done
Three-approaches-to-growth strategy spec
A structured strategy spec that captures all three of Christensen's growth approaches across the three Table 2-1 dimensions, with each cell filled and internally consistent with that approach's definition.
Unit economics and contribution margin
A correct per-transaction contribution-margin calculator, verified on held-out cases.
Van Westendorp acceptable price range
I enter each respondent's four price answers and get back the deterministic Van Westendorp points (PMC, PME, OPP, IPP) on the observed price grid, so I have a defensible acceptable-price band.
Viral coefficient and loop-driven user growth
A founder learns their viral K-factor and the cumulative users a seed cohort generates across viral cycles, so they can judge whether the product can grow on the viral engine alone.
Weekly growth-target schedule
A pure function that, given a starting metric value, a weekly growth rate, and a number of weeks, returns the compounded target for each week and the final value, mirroring the YC forward-looking growth graph practice.
Weighted founder idea-selection matrix
A structured decision matrix that rates each candidate idea against weighted virtue criteria, computes the weighted score (SUMPRODUCT of weights and scores) per idea, and ranks them, so founders pick a direction on stated criteria instead of gut feel.
Weighted sales forecast from the pipeline
A weighted, discount-adjusted forecast: each deal weighted by its stage probability and rolled up by month.
Workflow lock-in and switching-cost register
The founder gets a structured lock-in register that documents, per top customer, the automations / integrations / team-workflows running through the product plus a switching-cost estimate and an integration-depth tier, surfacing where the product is embedded and where it needs to go deeper.