Bitly
Tracking clicks on links you share to social, podcasts and print
PlotStack
Our verdict: A free, read-only Chrome dashboard that pulls together what Substack spreads across several screens (subscribers, open rate, acquisition sources, cohort retention, per-post and per-Note stats, attributed signups) and points out what stands out compared with your own past numbers. No account and no server: data stays in your browser, and paid and revenue figures are hidden by default. It reads Substack's undocumented internal endpoints through your logged-in session and syncs once a day in the background, it doesn't support custom domains yet, and it's a very new one-person project with no Chrome Web Store ratings yet, so expect breakage when Substack changes things.
Best for
Writers who want Substack's stats, growth, posts and Notes numbers in one local dashboard, with CSV and PNG exports
Pricing
Free. No paid tier or in-app purchases listed; its maker says his newsletter tools are free and will stay free.
Source: Chrome Web Store listing (v1.6.0, updated Oct 24, 2026; no in-app purchases listed) + privacy policy (sotoplatero.github.io/plotstack/privacy/) + public source at github.com/sotoplatero/plotstack + maker's Sept 18, 2026 post (sotoplatero.substack.com/p/sistema-operativo: 'Las cuatro son gratis y van a seguir siéndolo')
Website
chromewebstore.google.com/detail/plotstack-%E2%80%94-newsletter-an/odcgiilenioilmnaimbcaamocnmhhaib
Last checked
2026-10-31
Note: Made by Damian Soto (Objeto Brillante); independent, not affiliated with Substack. Interface in English or Spanish; *.substack.com publications only. Source is public on GitHub (no license file at time of checking).
Disclosure: We have no affiliate relationship with this vendor. StackKit is independent and not affiliated with Substack Inc. Spot an error? Email hello@stackkit.ink.
Compare: PlotStack vs Substack Insights for Substack →
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