$49

StackContacts (BETA)

Turn Your Customer Data into Actionable Insights — Instantly

Stop digging through spreadsheets and scattered data. Know which subscribers are ready to buy, which Notes drive revenue, and where your audience is slipping — without the stress or guesswork.


Get Instant Answers About Your Audience

Your subscribers aren’t just names on a list. They’re people with behaviors, engagement patterns, and purchase potential — and Claude AI sees it all.

Ask Claude in plain English:

  • “Which subscribers engage most but haven’t upgraded?”
  • “What Notes topics drive the most paid subscriptions?”
  • “Who bought Course A but might want Course B?”

All your Substack and Gumroad data is unified automatically. No copy/pasting, no switching between tools.


Real Insights That Drive Growth

For Content Creators:

  • Find which Notes turn casual readers into paying subscribers.
  • Discover FAQs and trends from DMs to shape your next post.
  • Identify engaged readers who haven’t upgraded yet and craft personalized offers.

For Course Creators:

  • Track the journey from free subscriber to course buyer.
  • Spot silent users who might need a check-in or follow-up.
  • Find cross-sell opportunities based on past purchases and engagement.

For Newsletter Publishers:

  • See which email topics get the highest click-throughs.
  • Create high-value segments for premium product launches.
  • Identify at-risk subscribers before they churn.

Why This Beats Traditional Analytics


How It Works

1. Connect Your Data

  • Automated extraction from Substack (subscribers, DMs, events) and Gumroad (products, sales)
  • Unified, analytics-ready SQL database with syncing from Substack and Gumroad
  • Built-in local MCP server allows AI to query the data

2. Ask Claude or Cursor Anything

  • Natural language queries: “Who are my top revenue opportunities?”
  • AI remembers previous questions and context for smarter answers

3. Get Actionable Insights

  • Instant segmentation and engagement scoring
  • Revenue attribution and behavioral analysis
  • Recommended next steps, not just numbers

What You Get

Smart AI Analyst

  • 20+ specialized prompts for segmentation, pattern detection, and growth insights
  • Cross-platform intelligence for a full customer view

Time & Revenue Boost

  • Replace hours of manual analysis with instant answers
  • Identify hidden revenue opportunities before competitors do

Confidence & Control

  • Spot churn risk, optimize content, and personalize offers without stress
  • Keep your growing audience engaged while scaling effortlessly

Technical Foundation You Can Trust

  • Modular architecture for future growth
  • DuckDB for lightning-fast analytics database
  • Local MCP server for reliable Claude or Cursor AI integration
  • MacOS app for robust data sync
  • Privacy-first: your data stays on your computer, no third-party sharing

Technical Requirements

  • macOS computer with Apple Silicon CPU (M series)
  • macOS version 15.6.1 or later
  • Substack Account with username and password authentication enabled
  • Optional - Gumroad account if you sell digital products
  • Claude (https://claude.com/download) or Cursor ( https://cursor.com/download) app installed - this is the user interface to chat with AI. StackContacts app provides a local MCP server to access your Substack (optionally, also Gumroad) data.


Ready to See Your Audience Clearly?

  1. Extract your data with one command: "Run Sync"
  2. Connect Claude AI via MCP for instant intelligence
  3. Ask your first question: “What are my top customer segments?”
  4. Watch insights flow — actionable recommendations, revenue opportunities, and engagement patterns appear instantly

This isn’t another dashboard you’ll ignore. It’s an AI analyst that knows your business and helps you grow it.

Questions? Email finntropy@gmail.com for direct creator support.


Tags: AI analytics, customer intelligence, Substack growth, Gumroad insights, revenue optimization, engagement scoring, personalized AI, business intelligence

This product is not currently for sale.
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