01
Find the angle
Turn a topic, reader tension, and available evidence into a defensible outline.
The content workspace for Substack writers
Write like you.Only better.
Plan the angle, strengthen the draft, and turn every essay into a complete week of useful content—without sanding away your voice.
Start free. No credit card required.
Draft review
The quiet advantage of writing slowly
The internet rewards speed. But the ideas that changed my work were rarely the ones I published first.
They were the ideas I almost discarded—the ones that needed another walk, another conversation, another morning before they became clear.
Stackflyer suggestion
Strong opening. Move the personal tension one sentence earlier to make the promise feel immediate.
Plan
Find the angle before spending hours on the draft.
Write
Strengthen the argument without losing your voice.
Package
Titles, Notes, CTAs, and social posts from one essay.
Publish
Turn the finished piece into a thoughtful weekly rhythm.
One connected workflow
From the first angle to a week of distribution.
Stackflyer keeps the brief, sources, publication context, voice, draft, publishing package, and calendar in one thoughtful workspace.
02
Write and edit
Strengthen the opening, structure, clarity, and voice while you keep final control.
03
Build the publishing week
Create titles, Notes, social posts, and a seven-day calendar from the finished essay.
The Stackflyer difference
A quieter kind of AI.
Most writing tools rush to finish the sentence for you. Stackflyer slows down, reads the whole piece, and helps your thinking land.
Your ideas. Your lived experience. Your final call.
Voice profile
Calm, personal, precise
Uses concrete personal moments
KeepShort sentence after a long build
KeepGeneric summary language
RemoveOver-explains the lesson
Tighten86
Warmth
91
Rhythm
78
Directness
From rough draft to publish-ready
One essay. A complete publishing package.
See the whole argument.
Map the promise, turning points, supporting evidence, and final takeaway before touching individual sentences.
1
Opening
A personal tension that earns attention
2
Argument
Three ideas, one clear through-line
3
Ending
A final turn the reader can carry away
Protect what sounds like you.
Stackflyer learns your rhythms and flags edits that make your writing generic, polished-flat, or strangely unlike you.
Personal phrase — preserve
AI-sounding transition — revise
Specific detail — strengthen
Publish beyond the essay.
Turn the finished piece into titles, calls to action, native Notes, and an editable seven-day publishing queue.
10 titles5 NotesSocial postsContent calendarCSV + calendar export
Edit with judgment, not autopilot.
Every suggestion comes with a reason. Accept it, reject it, ask for another approach, or keep the original.
Your draftSuggested edit
It is important to remember that consistency is really quite important.
Consistency matters—but only when the work still feels alive.
Free beta
A real editor, free while we build.
Use every editing mode without an account or credit card. Your feedback will shape what Stackflyer becomes.
Complete beta access
No stripped-down trial. Use the whole product.
$0during beta
- All editing and publishing modes
- Full draft revisions
- Publication and voice profiles
- Source Desk and idea planning
- Titles, Notes, and CTAs
- Seven-day content calendar
- Cloud-synced history and recovery
Questions, answered
Built to support the writer.
Will Stackflyer write the article for me?
It can help you move from an idea to an outline, but its primary job is editing—not replacing your thinking. You stay the author.
What happens to my drafts?
During the beta, drafts and versions sync to an anonymous private workspace unlocked by a random key stored on your device. Text is sent to our AI provider only when you request a writing tool. Avoid pasting highly sensitive information.
Is this an official Substack product?
No. Stackflyer is an independent tool built for writers who publish on Substack and is not affiliated with or endorsed by Substack.
Can I use it for other newsletters?
Yes. The editing experience works with any essay or newsletter, while the publishing package is designed around the way Substack writers publish and grow.
Bring the draft you care about.
The editor is open. Paste a rough idea or finished essay and choose the kind of help you want.
Open Stackflyer freeNo signup. No credit card. Free during beta.