O · thread
Growth economics & GTM measurement
The economics of growth: unit economics, cost-per-payer, retention and LTV math, channel measurement, and the spreadsheet that tells you whether the product is working.
13 decision topics in this thread — every topic gives a recommended default, the reasoning, and what flips it. Titles and dates below are free; the verdicts and full topics are the paid masterclass (a few showcase verdicts are shown in full).
| ID | Topic | Verdict | Verified |
|---|---|---|---|
| GRO-001 | Unit economics (CAC, LTV, ratio, payback, margin) | Build a small spreadsheet, measure cost-per-payer (never per-install), and gate on two numbers: CAC payback first, LTV:CAC second. | 2026-07-02 |
| GRO-002 | The living growth model | �e9f6e; verdict in the full masterclass | 2026-07-02 |
| GRO-003 | Cohort retention & resurrection curves | �e9f6e; verdict in the full masterclass | 2026-06-26 |
| GRO-004 | Funnel conversion & engagement (DAU/WAU/MAU) | �e9f6e; verdict in the full masterclass | 2026-07-02 |
| GRO-005 | North-star metric & input metrics | �e9f6e; verdict in the full masterclass | 2026-06-26 |
| GRO-006 | Channel economics & ROAS | �e9f6e; verdict in the full masterclass | 2026-07-02 |
| GRO-007 | Budget allocation & diminishing-returns analysis | �e9f6e; verdict in the full masterclass | 2026-07-02 |
| GRO-008 | Attribution in the post-privacy era2026 | �e9f6e; verdict in the full masterclass | 2026-06-26 |
| GRO-009 | Incrementality & geo / holdout testing | �e9f6e; verdict in the full masterclass | 2026-07-02 |
| GRO-010 | Marketing-mix modeling (MMM) | �e9f6e; verdict in the full masterclass | 2026-06-26 |
| GRO-011 | Growth loops & referral economics | �e9f6e; verdict in the full masterclass | 2026-07-02 |
| GRO-012 | Paywall & pricing experimentation$model | �e9f6e; verdict in the full masterclass | 2026-06-26 |
| GRO-013 | Forecasting, scenario & sensitivity analysis | �e9f6e; verdict in the full masterclass | 2026-06-29 |
Each topic behind these titles is a full worked decision: what it is, the recommended default, why, what flips it, how to execute it with your coding agent — cited and dated.
Read a full topic free →Launching soon — read a free chapter