Bitly
Tracking clicks on links you share to social, podcasts and print
StackContacts Studio
Our verdict: A local audience database for Substack: a Chrome extension copies your subscribers, Notes, posts, comments, DMs and (optionally) Gumroad sales, Kit list, Buffer/Blotato posts and Skool community to your own computer, matches people across them by email, and shows who's waiting on a reply, who's drifting and which Notes bring subscribers. Claude Desktop drafts replies, DMs and scheduled Notes, and nothing posts until you approve the exact preview. Strong if your readers and buyers live in different places; overkill if you only use Substack. It needs an Apple Silicon Mac or Windows 11 PC plus Claude Desktop (paid plan recommended), works through your logged-in Substack session, and is a one-developer tool that's only weeks old, so expect frequent updates.
Best for
Writers who also sell on Gumroad, keep a Kit list or run a Skool community and want to see who their readers, buyers and members are in one place
Pricing
$99 one-time, including 12 months of updates and email support (it keeps working after that; renewing for new versions is optional). Refund within 30 days if it can't sync your publication or connect to Claude Desktop after following the install guide.
Source: official Gumroad product page (finntropy.gumroad.com/l/stackcontacts_studio, v1.24.0, 4 ratings) + maker's Nov 1, 2026 post (finntropy.substack.com/p/every-creator-needs-a-scotty)
Last checked
2026-11-02
Note: Made by Finn Tropy (Finn'sights), an independent developer; not affiliated with Substack. Error reports and feature usage go to PostHog (not your content), and you can turn that off. Gumroad, Kit, Buffer and Blotato connections are read-only. Intel Macs aren't supported.
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: Orbit vs StackContacts Studio for Substack →
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