Fact sheet · Analytics & Data
Subshack
A free browser extension that audits Substack profiles and shows creators which Notes and posts bring subscribers, with welcome automation and reply
A free browser extension that audits Substack profiles and shows creators which Notes and posts bring subscribers, with welcome automation and reply
Overview
Subshack is a free audit and analytics tool for Substack creators, available as a Chrome extension and Firefox add-on. It scores any public profile out of 100 across five categories: positioning and clarity, conversion, brand and trust, activity and consistency, and discovery and SEO.
Inside Substack, the tool shows creators which Notes and posts brought new subscribers (not just likes), measures opens and clicks as counts of people, and identifies the best-performing formats and posting hours against their own baseline. The workspace has four views: Today (a prioritized action queue), Results (which content formats drive subscribers), Automate (welcome messages for new subscribers with daily limits), and Conversations (replies sorted by priority).
All stats are computed in the browser from the creator's own Substack session with no password required. A private backup keeps the workspace available across devices and is off by default for new users. Nothing publishes or sends without the creator explicitly choosing it.
Feature facts
- Shows which Notes and posts brought new subscribers, not just engagement
- Identifies best-performing formats and posting hours against your baseline
- Prioritized action queue showing what to do today with evidence
- Stats computed in browser with no password required
- Drafts text but never publishes without creator approval
Pricing
Pricing model: Free
Follow Subshack: their milestones, new launches and awards come to you by email, once a day by default.
Subshack specifications
| Section | Analytics & Data |
|---|---|
| Website | subshack.pro |
| Votes2 | 0 |
Subshack metrics
| Metric | Value |
|---|---|
| Domain Rating | 4 +1 (up) since last check |
| Trust Flow | 17 no change since last check |
| Citation Flow | 14 no change since last check |
| Referring domains | 12 no change since last check |
| External backlinks | 15 no change since last check |
Fact: Ahrefs Domain Rating checked 12 Nov 2026, fact changed 30 Oct 2026. Fact: top topic Computers/Software/Operating Systems (17). Fact: Majestic checked 10 Oct 2026, fact changed 10 Oct 2026. Link facts from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Subshack domain fact sheet
Open the fact sheet
| Domain age | 3 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | OVH SAS |
| DNSSEC | Signed |
Subshack launch receipt sheet
What we have measured for Subshack since it went live on SaaS Directory Info on 10 October 2026.
- 4 Domain Rating (Ahrefs) +1 (up) since launch
at launch: 3 (10 Oct 2026); latest: 11 Nov 2026 - 17 Trust Flow (Majestic)
first measured 10 Oct 2026 - 12 Referring domains (Majestic)
first measured 10 Oct 2026
Checkpoints
- Day 309 Nov 2026DR 4 +1 (up) since launch0 visits sent
Day 33 since launch. Next receipt: day 60, 9 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
Got a launch coming up?
Step-by-step tips for before, during and after your launch, free to read on SaaS Directory Info.
- Prepare
- Launch day
- Launch week
- Next steps
Compare and explore
Frequently looked up
- Q1Does Subshack publish anything for me?
- No, never. Subshack only drafts text and puts it in front of you. It never posts, follows, likes, restacks or messages on your behalf. You review every draft and press publish yourself inside Substack.
- Q2What does Subshack show that Substack does not?
- Subshack shows which Notes and posts brought new subscribers (not just likes), displays opens and clicks as counts of people alongside rates, and identifies your best formats and posting hours measured against your own baseline. Every figure comes from your own account.
- Q3Is Subshack free?
- Yes, Subshack 1.0 is free to install and use. Every sending feature has a daily limit. If a paid plan arrives later, existing users will be told before anything changes.
- Q4Where does my data go?
- Your stats are computed in your browser from your own Substack session and Subshack never asks for your password. A private backup to your Subshack account keeps your workspace available on other devices; it is on by default for new users and can be turned off in Settings. It is never shared with other users, sold, or used for advertising.
- Q5Is there a Firefox version?
- Yes. Subshack has been published on Firefox Add-ons since September 2026. Chrome and Chromium-based browsers (Edge, Brave, Arc, Vivaldi) install it from the Chrome Web Store listing.
Leave a review for Subshack
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Subshack has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
See also
| Product | Origin | DR1 | Votes2 |
|---|---|---|---|
 Telltale BotBot and AI agent detection for analytics that identifies without blocking | United States | 18 | 0 votes. Log in to vote for Telltale Bot in the file |
 WholetallyPrivacy-friendly web analytics that counts all visitors, including those who decline cookies or block scripts | Netherlands | 2 | 0 votes. Log in to vote for Wholetally in the file |
 SameAPIWebsite traffic checker with AI traffic data from ChatGPT, Gemini, Claude and Perplexity | not stated | 1 | 0 votes. Log in to vote for SameAPI in the file |
 FauryaPrivacy-first web analytics that helps you understand your visitors and grow your business. | India | 11 | 0 votes. Log in to vote for Faurya in the file |