Marketing playgrounds, not calculators
No sign-up, nothing stored, nothing leaves your browser. Drag sliders, answer five questions, paste a query — every scenario gets a live chart, a plain-language verdict, and a link you can send to your team.
Decide where the next rupee goes
What-if sandboxes with live curves. Drag the sliders, watch the verdict move, copy the link to settle the debate.
Budget Allocator
Split a fixed monthly budget across Google, Meta and retention — with diminishing returns — and see which shift earns the next rupee. A what-if sandbox for budget season.
Channel revenue = spend × base ROAS × (1 − drag × spend share)
Cohort-curve simulatorCAC Payback Simulator
Drag CAC, ARPU and churn and watch the payback curve bend — the month you break even, 24-month LTV, and whether the unit economics survive contact with reality.
Payback month = first month cumulative margin ≥ CAC · LTV = monthly margin ÷ churn
Decay-curve simulatorFrequency & Fatigue Visualizer
Drag impressions, audience size and creative decay to see when frequency turns from reach into waste — and what cap and refresh cadence that implies.
Frequency = impressions ÷ reach · effective CTR decays ~exponentially past the 3rd exposure
Find out what broke
Step-by-step wizards that turn symptoms into a ranked diagnosis with a fix checklist.
Check before you ship
Auditors and tests that catch the expensive mistakes: bad UTMs, underpowered tests, surprise warehouse bills.
UTM Builder + Governance Checker
Build clean campaign URLs with live validation — then paste existing URLs to score their naming before bad parameters pollute another quarter of attribution.
Clean URL = base + utm_source + utm_medium + utm_campaign (lowercase, no spaces, one convention)
Live significance test + power plannerA/B Test Significance Playground
Enter visitors and conversions for control and variant — get verdict, confidence, lift bounds, and the sample size you actually needed. No more calling tests at 60/40.
Two-proportion z-test (normal approximation) + 80%-power sample-size planner
Playground · simulator · query auditBigQuery Cost Estimator
Estimate what a query will cost before you run it — from validator bytes, with a table-scan simulator and a paste-your-query cost audit. On-demand BigQuery pricing, made concrete.
Cost = (Bytes Scanned ÷ 1 TB) × Price per TB, minus the free monthly tier
Classic single-number calculators (5)
The original quick calculators — one answer, no playground. Kept live for bookmarked links; the playgrounds above supersede them.
Breakeven ROAS Calculator
Enter your gross margin to find the minimum ROAS at which a campaign stops losing money — and the target ROAS at a chosen profit goal.
Breakeven ROAS = 1 ÷ Gross Margin
Blended CAC Calculator
Total spend across every channel, divided by total new customers — the acquisition cost number that reconciles with what you actually spent.
Blended CAC = Total Acquisition Spend ÷ Total New Customers
MER Calculator
Total revenue divided by total marketing spend — the attribution-agnostic efficiency number, plus its contribution-margin-adjusted variant.
MER = Total Revenue ÷ Total Marketing Spend
LTV:CAC Ratio Calculator
Compare customer lifetime value to acquisition cost, and see the payback period alongside the ratio — the ratio alone hides how long payback actually takes.
LTV:CAC = Customer Lifetime Value ÷ Customer Acquisition Cost
Budget Pacing Calculator
Project whether a campaign will land under, on, or over its monthly budget, based on spend-to-date and days elapsed.
Projected Spend = (Spend to Date ÷ Days Elapsed) × Days in Month
Every tool page also documents how the number is derived, a worked example, the assumptions baked in, and what the tool deliberately does not model — so you can tell whether the result answers your question before you act on it.