Substackr
Free to use - no sign-up required

Your next essay is
already out there.

Research writers you admire. Audit your own newsletter.

Get essay ideas

Free

Pick a Substack writer you admire. Get five essay ideas inspired by their approach - adapted for your newsletter, not a copy of theirs.

Audit your Substack

Free during beta

Enter your handle. We'll fetch your actual posts and about page, then give you a structured view of what's working, what isn't, and where you're leaving readers behind.

We fetch your actual posts and about page - not a guess.

See an example output

Research writers you admire. Understand your own newsletter.
Both free, both useful this week.

Essay ideas, not just research

Pick a writer you admire. Walk away with five ideas you could actually write - shaped around your niche, not theirs.

Full strategic profile

The brief you'd pay a researcher to write. Niche, positioning, audience, content patterns - and the gap they're leaving open for you.

Audit yourself

See your newsletter the way your readers do. The blind spots you can't see from inside - laid out clearly.

This is what you walk away with.

Two products. One free, one paid. See what each gives you.

5 essay ideas inspired by Lenny Rachitsky

Adapted for: building in public as a solo founder

Core tension

The instinct to follow user requests vs. the discipline to say no to most of them.

Why it works for them

Lenny's best posts create tension between conventional startup wisdom and what actually worked. He doesn't just share the right answer - he shows the moment of doubt.

How to adapt for you

Document a recent decision where you nearly pivoted based on user feedback, then didn't. Walk through your exact reasoning. For solo founders, this authenticity is the product.

2 more ideas in a real search.

Free, no account needed. Try it on a writer you know →

Good questions.

No. The tool analyses how a writer thinks — their angles, tensions, and editorial instincts — and uses that as a lens to generate ideas for your newsletter. The output is adapted for your niche and your voice, not theirs. You get the intellectual framework, not a template. A reader of your newsletter should never be able to trace an essay back to the inspiration writer.

Get started - it's free

Ready to write something
worth reading?

Free. No account needed. Results in under 60 seconds.

Get my first ideas →