https://development-web.com/ · Tools
5 items
5 marketing calculators for B2B SaaS: SEO ROI, Automation Savings, CAC+LTV, A/B test, Pricing. Free, no sign-up. Growth Math is a free suite of 5 marketing calculators designed for B2B SaaS founders and marketers. No sign-up required — just install and start calculating. CALCULATORS INCLUDED: 1. SEO ROI Calculator — Project your organic traffic, leads, revenue, and 12-month ROI from SEO investment. Uses real CTR data by SERP position. 2. Automation Savings Calculator — Calculate hours freed, monthly labor savings, error-cost reduction, and payback period for automation projects. 3. CAC + LTV Calculator — Determine Customer Acquisition Cost, Lifetime Value, LTV:CAC ratio, payback period, and get a grade (A-D) for your unit economics. 4. A/B Sample Size Calculator — Calculate required sample size for A/B tests using two-proportion z-test, plus estimated days to statistical significance. 5. SaaS Pricing → ARR Forecast — Model your ARPU, MRR, and ARR at 12 and 36 months with churn modeling across three pricing tiers. ✨ KEY FEATURES: • 100% free — no subscription, no sign-up • Privacy-first — all calculations run locally in your browser, no data is sent anywhere • Works offline — no internet connection required after installation • Clean, fast interface — get results in seconds • Copy results with one click — paste into Slack, docs, or presentations Perfect for: B2B SaaS marketers, growth teams, founders, SEO specialists, product managers, and anyone making data-driven marketing decisions. Built by Global One Digital — B2B SEO and automation agency.
May 12, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.