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— Free tools

Tools that compound

51 free calculators, simulators and AI copilots for DTC, SaaS and growth operators. No login, no email gate — just the math you needed yesterday.

— P&L · Runway · Margins

Finance & Profitability

Numbers that tell you if a business actually works — unit economics, breakeven, runway and the levers that move them.

Ecom OS Profitability Calculator

Simulate how every cost flows through to net profit — the operating system for your P&L.

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Profit Margin Calculator

Gross, operating and net margin — measured the right way.

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Net Profit Calculator

Walk revenue down to the line that actually matters.

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Break-Even Calculator

Units and revenue needed to cover fixed costs — the floor every plan needs to clear.

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Cash Flow Calculator

Monthly cash in, cash out, and how many months you have left.

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Burn Rate Calculator

Gross and net burn, plus the months between now and zero cash.

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ARR Calculator

MRR → ARR, with churn baked in and growth projected forward.

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IRR Calculator

Internal rate of return for a cashflow series — the version finance teams actually use.

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Enterprise Value Calculator

EV from EBITDA, revenue or SDE multiples — calibrated to typical bands.

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Dilution Calculator

How much of the company you actually own after the next round.

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Rule of 40 Calculator

Growth + profit margin should clear 40 — the SaaS sanity check.

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DTC Unit Economics Simulator

Per-order, per-cohort and per-channel economics — stacked.

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Amazon FBA Calculator

Referral, FBA, returns and PPC — what actually lands after Amazon.

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Shopify Fee Calculator

Plan + transactions + payments — the real cost of Shopify at any volume.

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Inventory Turnover Calculator

Turnover ratio, days outstanding, and the cash locked in inventory.

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— Spend · Channels · Funnels

Marketing & Growth

From a single ROAS calculation to a full media-mix simulator — work back from your goals to the budget that gets you there.

ROAS Calculator

ROAS, break-even threshold, and profit — for any campaign, in seconds.

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Break-Even ROAS Calculator

The lowest ROAS at which a campaign stops costing you money.

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CPC Calculator

Cost per click and the volume you get for any budget.

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CPM Calculator

Cost per thousand impressions, plus reach by budget.

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MER & POAS Calculator

MER and POAS — the blended metrics that survive iOS, MMM and reality.

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CAC Calculator

Blended and paid CAC, channel by channel.

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CAC Payback Calculator

Months from acquisition to recovering the cost from gross margin.

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LTV Calculator

Lifetime value, both predictive and historical, with retention curves.

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LTV:CAC Ratio Calculator

LTV ÷ CAC — the single ratio investors actually care about.

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Ad Budget Planner

Work back from the revenue goal to the daily budget that hits it.

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Media Mix Allocator

Allocate spend across channels with diminishing returns baked in.

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Influencer Budget Planner

Plan influencer partnerships with ROI expectations baked in.

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Email Marketing ROI Calculator

Revenue per subscriber, optimal frequency, and the list size you need.

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UTM Builder

Clean, consistent UTM-tagged URLs with presets and bulk generation.

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Lead Gen Funnel Simulator

Model the whole funnel — channel mix, conversion math, CAC by source.

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Ads Competitor Analysis

Pull, group, tag and score competitor ads to find category white space.

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— Customers · Tests · Signals

Analytics & Intelligence

Read what your tests, customers and competitors are telling you — A/B significance, NPS, pricing elasticity, creative impact.

A/B Test Calculator

Sample size, significance and confidence intervals — the rigorous version.

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Conversion Rate Calculator

Conversion rate, drop-off and the math behind your revenue goal.

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Churn Calculator

Monthly, annual and revenue churn — the slow leak that compounds.

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NPS Calculator

NPS with intervals and segment breakdown.

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Engagement Rate Calculator

Engagement rate, normalised by reach or follower count, across platforms.

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Price Elasticity Calculator

PED from two data points — and the price that maximises revenue or profit.

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Pricing Psychology Tool

Van Westendorp PSM — the price range customers will tolerate.

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Creative Calculator

How many creatives you need and how often to refresh, by spend level.

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Landing Page ROI Calculator

Revenue uplift from a CR improvement, at your traffic and AOV.

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B2B Pipeline Calculator

Coverage, conversion by stage, revenue per rep — the B2B math.

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Soon

Customer Intelligence

Upload reviews. AI surfaces motivations, friction and customer language.

Coming soon
— Generate · Analyze · Audit

AI Tools

Generative copilots that draft hooks, headlines and personas, plus auditors that score landing pages and growth motions.

AI Ad Copy Generator

Hook, body and CTA combinations for any product and platform.

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AI Headline Analyzer

Score headlines on clarity, emotion, specificity — and get a stronger rewrite.

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AI Hook Generator

Stop-the-scroll first lines, multiple framings, ranked.

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Soon

AI UGC Analyzer

Score UGC scripts on hook, pain-point and conversion path.

Coming soon

AI Buyer Persona Generator

Sharp personas with JTBD, objections and channels — from a single brief.

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AI Email Subject Line Tester

Score and rewrite subject lines for open rate, with predicted lift.

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AI Growth Audit Scorecard

AI audit across acquisition, retention, monetisation — with a prioritised plan.

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AI Marketing ROI Dashboard

ROI diagnosis across channels — and the levers that would move the needle.

Open
Soon

AI Landing Page Analyzer

URL in. Clarity, value prop, CTA and risk-reversal scored, then rewritten.

Coming soon