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Scene 1 · Faceless long-form, 10 min to 3 hrs

Scripts that keep their promises.

Every question your narration raises is a promise to the viewer. ScriptFlow tracks each one to the line that pays it off, checks every name and number against your research, and flags the stock phrasing that makes faceless channels sound alike.

Get lifetime access $49 Open the app

One payment. Your own AI key. Scripts synced to your account.

THE TULIP BUBBLE · DRAFT 3 41 MIN · 6,120 WORDS
00:00

In the winter of 1637, a single flower bulb sold for more than a house.

00:07

So why, three weeks later, could nobody give one away?Q1 raised

00:14

The answer starts in a garden in Leiden, with a professor who was truly a testament tostock phrase patience.

00:23

His bulbs were sold by a merchant called [VERIFY: name]check research

14 minutes of story
14:20

Nobody wanted tulips. They wanted the next buyer.Q1 paid off

questionpayoffflag held for 14 min 13 s
00:003-hour scriptsTested on 28,000 words with no typing lag
45:00Works offlineEvery structural check runs on your device
1:30:00No creditsPay your AI provider at cost, not per word
3:00:00Never lostSynced to your account and every device
THE TULIP BUBBLE · 6 CHAPTERS · 41 MINAI is writing
  1. 1HookDone
  2. 2The first bulbsDone
  3. 3A flower for kingsDone
  4. 4Tavern tradingWritingDone
  5. 5The empty auctionQueuedWriting
  6. 6What was leftQueued

Chapter 4 · Tavern trading

By the winter of 1636, nobody in Haarlem traded bulbs in the fields any more. They traded them in taverns, at night, over beer. A weaver could walk in with nothing and walk out owning a flower he would never see. So who was actually holding the bulbs?Q2 raised

Fig. 1 The studio. AI writes chapter by chapter while you watch; the Fix List checks every line and clears as problems are fixed.

Running order

Three segments. Each one does a job your viewer will feel but never notice.

01Loop Graph

See the structure that keeps people watching.

Every question your script raises is drawn as a line to the passage that answers it. Delete a payoff and the question turns red right away. Reorder sections and you'll see if an answer now lands before its question.

  • Scrub the timeline to see what the viewer is holding at any minute
  • Flags questions that are never answered, or forgotten for too long
  • Edit every link by hand; the analysis never overwrites your changes
LOOP GRAPH · 4 QUESTIONSMIN 0 · HOLDING 0
CH 1CH 2CH 3CH 4CH 5CH 6 Q1 · Why did the price collapse? Q2Q3 ? Q4 · never answered
02Fact grounding

Every name and number, traced to your research.

Paste your research notes and ScriptFlow flags any name, date or figure in the script that doesn't appear in them. When a draft needs a detail you haven't supplied, it writes [VERIFY: …] instead of inventing one.

  • Built for history, true crime and documentary niches
  • Runs locally, instantly, with no AI call
  • Open placeholders block your publish checklist until resolved
FACT GROUNDING · CH. 5CHECKED ON YOUR DEVICE

Research notes

Feb 1637: bulb auction in Haarlem. No buyers turn up.

Prices collapse within three weeks.

Rarest bulb, the Semper Augustus, once offered for a canal house.

Courts later treat the contracts as gambling debts.

Script

In February 1637, at a bulb auction in Haarlemin notes, nobody bid. Within three weeksin notes, prices had fallen apart. Even the Semper Augustusin notes found no buyer. One trader, [VERIFY: name], lost 4,000 guildersnot in notes.

3 traced2 to verifyPublish checklist: blocked until resolved
03Not templated

Sound like a writer, not a template.

Stock AI phrases, repeated passages, flat sentence rhythm, and wording you've already used in your channel's other scripts are all flagged as you write. Fix them one at a time, or rewrite them in a batch and review every change before it lands.

  • Cross-script repetition across your whole channel
  • Rewrites keep meaning and never add facts
  • Every bulk change is versioned and reversible
SENTENCE RHYTHM · CH. 3FLATVARIED
6 sentences, 13–15 words each. Read aloud, it drones.
sentence 1words per sentence12
  • Stock phrasea testament to proof of
  • Channel repeat“a fortune changed hands overnight” also in 2 of your scripts · rewritten

The red pen

Edit out the AI tells.

AI drafts give themselves away with the same habits again and again. ScriptFlow marks every one as you write, fixes them in a batch, and checks each fix so it doesn't bring in new ones.

Draft7 tells

Imagine a bustling port“Imagine…” opener · AI word in 1637. It was a crucialAI word moment, not just for traders, but for a whole nationnot just X, but Y. Greed, hope, and fearlist of three filled the streets. Who would buy? Who would sell? Who would lose everything?question string In the end, it was a story about trust.moral closer

After Fix All0 tells

In the winter of 1637, the taverns of Haarlem were packed with men trading flowers they had never seen. A single bulb could buy a canal house. Then, one cold morning, a buyer didn't show up.

Example A made-up passage, edited the way the checks and Fix All edit a real one.

  • AI-sounding wordscrucial, vibrant, bustling, intricate, delve, tapestry and dozens more
  • Lists of threeone per chapter reads naturally; triplets everywhere don't
  • “Not just X, but Y”and “it's not X, it's Y”: one per script, then it's a formula
  • Question stringsthree rhetorical questions in a row
  • Moral closersparagraphs that end on “In the end, it was about…”
  • Stock openers“Imagine…”, “Picture this”, “Here's why”
  • Flat rhythmruns of sentences the same length, which drone when read aloud
  • Dashes and stock phrasesem dashes, “little did they know”, “a testament to”
  • Your own habitswording you've already used in your channel's other scripts

Your publish checklist scores AI tells per 1,000 words. No tool can promise to beat an AI detector, and we don't. These checks remove the habits listeners notice.

Cue sheet

Everything else between the brief and the voiceover booth.

  1. Plan with structure first

    Six templates for mystery, rise and fall, countdown, explainer, true crime and calm long-form, with loops planned before any prose.

  2. Real retention, on the story

    Import a published video's retention CSV. Each drop appears next to the passage and the questions viewers were holding at that moment.

  3. Hook Lab

    Five alternative openings in different techniques, each measured for length, concreteness and stock phrasing.

  4. Titles and chapters

    Title options with length checks, and valid YouTube chapters generated from your sections.

  5. Channel voice

    Learns sentence rhythm and structure from reference scripts, and blocks any passage that copies their wording.

  6. Voiceover-ready export

    TTS text with numbers spelled out, split to your tool's limit, plus an editor cue sheet and Markdown.

The meter is off.

Most AI script tools charge credits per word, so a three-hour script can use up a month of credits. Long scripts shouldn't cost more to write.

Credit-metered toolsScriptFlow Studio
PricingMonthly subscription, credits per scriptOne-time purchase
AI cost for long scriptsGrows with every wordYour provider's raw price; you choose the model
Where scripts liveVendor's serversYour browser, with exports and backups
StructureA score or a reportAn editable map that updates as you write
FactsGeneratedChecked against your research
Admit one · Lifetime
$49
Paid once. Yours for good.

Every feature, every update to version 1.x, on up to 3 devices.

  • Unlimited channels and scripts
  • Loop Graph, fact grounding, readiness checks
  • Drafting, rewrites, Hook Lab and titles with your own AI key
  • Retention overlay, chapters and voiceover export
  • Works offline; your data stays yours
Buy on Gumroad

Secure checkout by Gumroad. Your license key arrives by email right away. See the refund policy.

Open loops

Questions people ask before buying. Open one to pay it off.

Q1What does "bring your own key" mean, and what will AI cost me?

You create an OpenRouter account and paste its API key into ScriptFlow. AI requests go straight from your browser to OpenRouter, which bills you at the model's published price. You pick the model per task, and the app shows estimated cost before drafting and enforces a spend cap you set. Every structural check (loops, facts, repetition, readiness) runs locally and costs nothing.

Q2Where are my scripts stored?

The app works from a copy in your browser, so it stays fast and works offline. Scripts, channels and reference scripts are also synced to your account, so they appear on every device where you activate your license and come back if you clear your browser. Your API key never leaves your device. You can turn sync off per device in Settings, and download a full backup any time.

Q3Does it work offline?

Yes. Writing, all local checks, the Loop Graph, exports and backups work offline. AI features need a connection. Your license re-verifies automatically when you're online and stays valid for 30 days offline.

Q4How many devices can I use?

Up to 3 browsers or computers per license. You can sign devices out yourself from Settings, or from the activation screen if you've reached the limit.

Q5Will this get my scripts past AI detectors or keep my channel monetized?

No tool can promise either, and we don't. ScriptFlow helps you write scripts with clear structure, traceable facts and less templated phrasing. Monetization decisions are YouTube's.

Q6Is the Retention Map a prediction of my retention?

No. It shows editorial signals read from the text. Real retention needs real viewers: import your published video's retention CSV to see it aligned with the script.

Q7Which languages are supported?

English. The phrase lists, rhythm checks and narration-speed estimates are built for English narration.

Q8Can I get a refund?

See the refund policy. Refunded licenses are deactivated automatically.

Final scene · Fade out

Write the script.
See why it works.

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