NoteStack — Substack Notes Analytics

See which Substack Notes drive subscribers. Heatmaps, content analysis, trends — your Notes analytics dashboard.

Stop guessing which Notes work. NoteStack shows you exactly which Substack Notes drive subscribers, engagement, and growth — right in your browser side panel. ✨ FEATURES 📊 Dashboard — All your Notes ranked by engagement in one clean view. See likes, restacks, comments, and subscribers gained per Note at a glance. 📊 Note Performance Map — Every Note classified as Dynamo, Rocket, Burner, or Wonder based on engagement vs conversion potential. See which Notes actually drive subscribers vs which just get likes. 🔍 Spy Mode — Analyze any public Substack profile. Enter a username and see their top Notes, best content types, posting patterns, and key takeaways. Study what works in your niche. 💡 Engagement Insights — Automated coaching from your data. NoteStack tells you what changed, what worked, and what to try next. Week-over-week comparisons, best content type detection, trend analysis. 🤖 AI Prompt Templates — 8 research-backed templates for generating Notes using your own ChatGPT or Claude. Based on real data from 9,641 analyzed Notes. Clipboard workflow, zero cost. ♻️ Evergreen Recycler — Your best Notes deserve a second life. Repost scoring tells you which old Notes are ready for a fresh audience. One-click respin with AI. 👥 Top Fans — See who engages with your Notes the most. Leaderboard ranked by comments, restacks, and likes. Know your superfans. 🔖 Note Bookmarks — Save inspiring Notes from your feed as a swipe file. One-click respin into your own voice using AI templates. 🗓️ Best Time Heatmap — A 7x18 grid showing which day and hour combinations drive the most engagement. Know exactly when to post for maximum reach. ⚡ Optimal Posting Time — Data-driven recommendations for your best time slots. Based on your own engagement data, not generic advice. 🔔 Viral Alert — Get a browser notification when any of your Notes gets 3x your average engagement. Never miss a breakout moment. 🧬 Note DNA — Automatically categorizes your Notes (Questions, Personal Stories, List/Tips, Link Shares, Short Takes, Long Form) and shows you which types resonate most with your audience. 🏷️ Themed Categories — Tag your Notes with color-coded themes (Tips, Story, Opinion, Inspiration, News, Question, Evergreen). Filter your dashboard by theme. Track which themes perform best. 📈 Trends — Track your engagement over time with clean line and bar charts. Spot your best weeks and see if your writing is improving. 🔥 Streak Tracker — A contribution calendar showing your last 30 days of posting. Current streak, longest streak, and consistency stats. 📤 CSV Export — Download all your Notes data as a spreadsheet for deeper analysis in Excel or Google Sheets. 📥 Full Backup and Restore — Export all your NoteStack data as a JSON file. Import it back anytime. Your data, your control. 🗺️ Roadmap — See what we shipped and what is coming next. Built based on real user feedback. ⚡ HOW IT WORKS 1️⃣ Log into substack.com in Chrome 2️⃣ Click the NoteStack icon in your toolbar 3️⃣ See your analytics instantly — no setup, no login, no configuration 🔒 PRIVACY FIRST ✅ All data stays on your device ✅ No server — we literally cannot see your data ✅ No analytics, no tracking, no data collection ✅ Not affiliated with Substack 🎁 FREE FOR EARLY USERS — All 18 features included at no cost for the first 500 users. Get in early before paid plans launch.