BlogRules

12 models · 3 languages · 2 rulebooks

Stop guessing your valuation.
Run the math investors run.

Valuation, runway, pricing, hiring and dilution — calculated live as you type. Nothing you enter leaves this device.

Find my runway →Value my startup

Why this is not another spreadsheet

01

Built for Brazil and LatAm, not translated

US tools assume a Delaware C-corp. Here you switch the rulebook: SAFE or Brazilian mútuo conversível with interest, CLT payroll with 13th salary and FGTS, capital-gains tax on options, country risk in the WACC.

02

Fill it in once. Everything updates.

Cash, MRR, ARPU, churn, margin and CAC live in one shared core. Your hiring plan feeds runway; runway and LTV/CAC feed the investor checklist next to your valuation. Separate spreadsheets never talk to each other.

03

Deterministic math, tested formula by formula

No AI guessing numbers. Every formula has automated tests, including the worked examples from the industry's best-known templates — same inputs, same answer, every time.

04

Free, no signup, nothing leaves your browser

The templates founders pass around sit behind paid newsletters. Here they run live in the browser, your numbers stay on your device, and a share link carries the scenario to your co-founder or accountant.

Your shared numbers

— Edited in any tool, used by all of them.

Cash: …
MRR: …
ARPU: …
Churn: …
Runway: …
LTV/CAC: …

Valuation & fundraising

VC Method valuationBack into today's valuation from the exit, the investor's target return and future dilution.Open →SAFE & convertible dilutionCap table after the priced round: post- and pre-money SAFEs, Brazilian convertible loans, discount, cap and pool.Open →DCF valuationFree cash flow forecast, WACC by CAPM, Gordon terminal value and a WACC × growth sensitivity grid.Open →

Cash, burn & team

Cash runwayMonth-by-month cash, net burn, the month you run out, break-even and burn multiple.Open →Headcount planningFully loaded cost of every hire and the payroll timeline by department. FTE vs. contractor.Open →Startup KPI dashboard (MIS)Log your monthly numbers once; get margin, burn, runway, CAC, churn, LTV and burn multiple, plus a yearly summary.Open →

Unit economics & growth

CLTV vs. CACCustomer lifetime value against acquisition cost, payback months and where you stand against the 3:1 benchmark.Open →SaaS cohort analysisLogo and revenue retention heatmaps, GRR, NRR and CAC payback per cohort. Simulate or paste real data.Open →SaaS financial modelMRR bridge (new, expansion, churn), ARR by year, EBITDA, cash, quick ratio and Rule of 40.Open →Pricing strategyVan Westendorp price sensitivity from your survey, plus cost-plus, market and value-based anchors.Open →

Equity & guide

Stock options calculatorVesting, value today and across exit scenarios, with an NSO/ISO tax estimate.Open →Financial modeling guideThe drivers behind every model here: revenue, costs, working capital — and which tool answers which question.Open →

Language and rules are separate: a LatAm startup with a Delaware holding uses US SAFEs; a Brazilian company uses the mútuo conversível.