Free preview, no signup
Enter any Substack publication URL. We fetch the public RSS feed server-side and show the last 10 post titles. Topic clustering and retention require Substack auth integration (after waitlist).
Free vs full
- Free preview (this page): Last 10 post titles from public RSS only. No auth, no analytics.
- Indie tier ($9/mo): Subscriber retention by topic, cadence vs growth correlation, auto topic cluster, weekly health report. Requires Substack OAuth.
- Scale tier ($29/mo): Benchmark vs similar publications, lapsed-reader cohort export.