Runs 100% locally — no cloud or subscription required

Better analytics for
your Substack™.

Export your Substack™ data and instantly unlock deep insights into growth, subscribers, and engagement.

  • Desktop app — not a website or SaaS
  • Works offline — your data never leaves your device
  • Optional AI insights — via Ollama or your own API key
Buy now — $49.99 $29.99 Live Demo soon
Buy once, use forever · No subscription · No account needed
StackStats
StackStats
StackStats
StackStats

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Desktop app Installed on your Mac or PC
No internet needed Fully offline, always
Zero data sharing No server ever sees your data
AI is optional Use Ollama free & offline, or skip it

Everything Substack™ doesn't show you

7# Views. All computed locally. All actionable.

Overview KPIs, weekly growth chart, traffic sources & smart action panel
Growth Sources Which sources actually convert & which posts brought subscribers
Subscribers Re-engage targets, churn risk, power users & engagement segments
Publications Best day & hour for your audience, top growth posts, paid vs free
Deep Dive Open rate decay, cohort retention, superfans & reader scores 0–100
Reach Page views, follower growth & audience by country and US state
PII Protection Toggle subscriber names & emails off — safe for screen sharing
Optional add-on

Want more? Add AI insights.

All analytics work without AI. But if you want a 30-day action plan, growth analysis, and a chat window that knows your data — it's one setting away.

Free & fully offline
Run Ollama locally

Install Ollama and run Llama 3, Mistral, or any local model. Full AI insights with no API key, no cost, no internet.

No API key No internet No cost
or
BYOK
Connect any AI provider

Drop your API key in Settings. Prompts go directly from your device to the provider — we never see them.

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Export CSVs. The app does the rest.

No manual setup. No configuration. Point it at your files and go.

1

Export from Substack™

Settings → Exports. Download your CSVs to any folder.

→
2

Open the app

Point it at your folder. Auto-detects every file type instantly.

→
3

Get actionable insights

Who to re-engage, when to publish, what's driving growth — and a 30-day plan.

Substack™ owns your stats.
You own this.

One payment. App is yours forever, locally on your device — regardless of what Substack™ does next.

First 50 users — launch price
1-Year
$49.99 $29.99
one-time · app yours forever
  • ✓ Full app license, yours to keep
  • ✓ All 7 analytics tabs, fully offline
  • ✓ Optional AI via Ollama or BYOK
  • ✓ Mac & Windows
  • ✓ Unlimited CSVs & data
  • ✓ 1 year of updates & support
Get 1-year access →
Want updates after year 1? Renew for $29.99/yr — or don't. App keeps working either way.
Recommended
Lifetime
$119.99 $79.99
one-time · updates & support forever
  • ✓ Everything in 1-Year
  • ✓ All future updates, forever
  • ✓ Every new AI provider & feature
  • ✓ Lifetime priority support
  • ✓ Never pay again
Get lifetime access →
Most newsletter analytics tools charge $20–50/mo.
You pay $79.99. Once. Ever.
Live Demo soon Secure checkout · Instant download · 14-day refund policy
Continuously updated

Always getting better.

New AI providers, deeper analytics, and improvements ship regularly. Buy it today and it'll be a better product next month — at no extra cost for lifetime users.

View full changelog →

Frequently asked questions