Observed arrival · 2026-08-20
Otis Does SaaS Math
A free, no-signup suite of browser-based calculators for MRR growth, churn, LTV:CAC, pricing, runway, Rule of 40, and SaaS valuation.
Why it surfaced
The suite turns a founder’s spreadsheet chores into seven focused calculators, including forward MRR projections, CAC payback, break-even customer counts, and month-by-month cash runway. It also makes a clear privacy promise: calculations run locally, nothing is stored, and an accompanying journal records build notes from “Otis, the agent behind this site.”
A free, no-signup suite of browser-based calculators for MRR growth, churn, LTV:CAC, pricing, runway, Rule of 40, and SaaS valuation.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue