100% Free Tools • Zero Paywalls • Open Formulas • Server-Side Rendered

Data-Driven Marketing Tools, Calculators & Research

Interactive unit economics calculators, verified marketing benchmarks, and deep search models designed for growth teams, founders, and performance marketers.

🧮 Free Interactive Calculators & Decision Tools

Client-side instant calculations backed by transparent mathematical formulas. No email required.

View All 15 Tools →
🧮
Cohort Economics

Cohort & Unit Economics Simulator

Model customer acquisition cohorts from inbound traffic down to net contribution profit using ARPU, ARPPU, and ROMI.

ƒ(x): Profit = UA × (ARPU - CPA_visitor)
🤖
SEO & AI Engine

AI Search Citation & GEO Readiness Analyzer

Simulate passage extraction probability, exponential positional decay (t½ ≈ 350 tokens), and multi-engine viability across Google AI Overviews, Perplexity, and ChatGPT Search.

ƒ(x): S_cit = 0.15·S_len + 0.25·S_pos + 0.20·S_fd + 0.15·S_edr + 0.10·S_dr + 0.15·S_fmt

🔬 Original Research & Empirical Benchmarks

Deep studies synthesized from 50–130+ primary sources via Google Gemini Deep Research.

All Studies →
📚 72 Sources Analyzed Updated: September 2026

The Empirical Anatomy of AI Search Engine Source Selection and Citations

Cross-engine meta-analysis synthesized from 72 primary sources, Google patents, and Princeton GEO benchmarks. Deconstructs the 5-stage RAG retrieval pipeline, exponential positional decay (t½ ≈ 350 tokens), Information Gain entropy, and empirical passage-level extraction multipliers.

4.2 Avg Citations/Query
54.2% Top-10 SERP Overlap
~350 Tok Salience Half-Life
Read Full Report 8,940 words
📚 138 Sources Analyzed Updated: September 2026

The Break-Even ROAS Trap: Why 68% of DTC Brands Operate at a Net Cash Loss

Audit analysis of 138 SEC Form 10-K filings, NRF benchmarks, and GAAP datasets proving why naive break-even ROAS (1/Margin) leads to insolvency. Quantifies return friction, 3PL logistics, gateway drag, CM1/CM2/CM3 waterfalls, and the 135-day Cash Conversion Cycle.

68% Cash Deficit Rate
+173% Naive Formula Error
3.2x–4.8x True B/E Floor
Read Full Report 9,200 words
📚 47 Sources Analyzed Updated: September 2026

The Empirical Anatomy of Top-10 Google Rankings in 2026

Meta-analysis of 50,000 competitive SERPs proving why unique referring domains remain the primary search gatekeeper. Quantifies empirical domain deficits, annual link rot (t½ ≈ 3.47 yrs), and algorithmic velocity safety corridors across industries.

5.41x Pos 1 vs 10 Deficit
3.47 Yrs Link Half-Life
42.6x Seed Link Equivalence
Read Full Report 5,200 words
📚 49 Sources Analyzed Updated: September 2026

Why the Traditional 3:1 LTV:CAC Ratio Is Broken for AI-Era Software

Continuous AI inference compute and token APIs compress software gross margins down to 50%–60%. Under these compressed margins, a nominal 3.0x Gross LTV delivers an effective Net LTV:CAC of only 1.65x—driving startups into structural cash flow insolvency.

55% AI Margin Median
1.65x Effective Net LTV
≥3.5x 2026 Net Target
Read Full Report 4,800 words
Alex Zaremsky
Alex Zaremsky Growth Engineer & Search Strategist

I build data-oriented tools and research for performance marketing, SEO, and AI generative engines. This portal is maintained as an open workbench: every calculator uses transparent formulas, and every study cites primary data. If an interactive tool saved your team time today, that's the only metric that matters.