Subshack turns your own Substack numbers into decisions, and scores any public Substack profile out of 100. It is a Chrome extension that runs inside the Substack pages you already work in.
PROFILE AUDIT
Score any Substack profile out of 100 — positioning, conversion, brand and trust, activity and SEO — with what to fix first, ranked by impact. Your own publication is audited automatically the first time you open it. The same engine is free and public at subshack.pro/tools/substack-profile-audit.
YOUR NOTES, ARTICLES AND SUBSCRIBERS
One sync collects everything Substack knows about your growth: every Note (impressions, new subscribers, replies, restacks, audience and traffic sources), every published article (recipients, open rate, click-through, views, likes, comments, restacks, and who opened each email), and your subscriber list as Substack sees it — searchable, filterable, exportable to CSV.
WHAT IT TELLS YOU
What actually earns subscribers versus what only earns impressions. Organic growth separated from reciprocal (sub4sub) mechanics, on purpose. How a Note evolves after publishing. Your audience as real people, ranked by relationship, with a suggested next step.
WRITING HELP — YOU ALWAYS PUBLISH
Turn an idea, or one of your own published articles, into three ready-to-edit Note angles. Get reply suggestions that answer the actual content. Fill a Substack article template from a brief, pulling from your own archive. Drafts appear in the editor; you read, edit and publish.
WHERE YOUR DATA LIVES
Everything Subshack collects — settings, Notes and article stats, audience, your subscriber list and their email addresses — stays on your device, in Chrome local storage. It is never uploaded, never shared, never sold. No account, no sign-up, no password.
Subshack never posts, follows or likes on your behalf. Replying to private messages is the one action it can perform, and only after you turn it on: drafts by default, with an optional automatic mode you enable yourself, bounded by a delay, quiet hours and a daily cap you set.
