Sudowrite Review

What Is Sudowrite?

Sudowrite is an AI writing partner for novelists. Its pricing page lists Write, Rewrite, Describe, Expand, Brainstorm and an AI chat for fiction, with a Story Bible, continuity across a series, and Feedback (developmental edits, line edits and beta reads) on the two upper plans. The company behind the store listings is Human Plus Plus, Inc.; the Terms refer only to "the Operator", so the legal entity named in them is not confirmed.

It has a web app and companion apps for iPhone and Android. There is no library to read, no interactive story and no reader-facing choice; it is a tool for producing a manuscript, and that is why we keep it out of our rankings of reading apps.

Sudowrite review: who it suits

On the published pages, Sudowrite suits an author drafting a novel who wants a model tuned for fiction and is happy to pay by credits. It does not suit someone who wants stories to read, a finished library, narration or a game. If your interest is publishing what you write, our page on the payment processors that treat adult content writers differently covers one of the next steps.

Whose model is it? Two content rules in one product

The content rules at an AI writing service follow whoever supplies the model, and Sudowrite is the clearest case in this section. It offers its own models, Muse and Ballad, which its pricing page calls Sudowrite's AI models just for fiction, alongside 30 or more others. Those others include OpenAI-based models, and they do not behave like Muse.

The docs page on choosing a model (last updated January 14, 2026) rates Muse like this: Content Filter Level: Virtually none. Handles any content from dark and gritty to light and humorous, including graphic or mature themes that other AIs might refuse. Use discretion, but know Muse won't shy away from adult content. It rates the OpenAI-based models as Strict, inheriting OpenAI's content moderation. Avoids explicit sexual content and extreme violence.

So the same prompt can be written by one model and refused by another, inside one subscription. Which model you select decides what you get. The Terms add a complication. Their list of prohibited uses includes any obscene or immoral purpose, which sits awkwardly beside the docs' description of Muse. The Terms and the model docs are both Sudowrite's, and we do not know how the Terms phrase is applied. We also do not know whether the iPhone and Android apps apply the same filters as the web app.

For the wider picture, see our guide to NSFW rules at AI story apps.

Credits, not context

Most services in this section sell tiers on context size. Sudowrite does not publish one. Its memory is described as the Story Bible, series support and what it calls a saliency engine, with no token figures. What it sells instead is credits: 225,000 a month on Hobby & Student, 1,000,000 on Professional and 2,000,000 on Max. Unused credits roll over for 12 months on Max only.

The docs are candid that credits do not map to words. Use depends on words read, words written and the model, and 1 million credits of the Professional plan might allow you to generate anywhere from 50,000 to 500,000 AI words in a month. That is a tenfold spread. On Professional at $29 a month it works out at between about 6 cents and 58 cents per thousand AI words, depending on what you ask for and which model does it.

The step between plans is uneven. Hobby & Student to Professional costs $10 more at monthly billing and gives more than four times the credits (225,000 to 1,000,000), plus Feedback. Professional to Max is almost exactly a doubling: $29 to $59 monthly, or $22 to $44 paid annually, for twice the credits and 12-month rollover. One more discrepancy: the rendered pricing page prints "450,000" beside "1,000,000" for Professional, while the docs plans page and the page's structured data say 1,000,000. We record the docs figure and have not resolved the difference.

How much Sudowrite costs

Checked October 27, 2026. Source: docs.sudowrite.com. Prices change with region, promotions and the store you buy through.

The web rows are US-dollar prices from the pricing page and the docs plans page. The rendered pricing page shows the annual view ($10, $22, $44); both terms are in the docs. Paying annually cuts the per-month price by about 47 percent for Hobby & Student, 24 percent for Professional and 25 percent for Max. The yearly total is not printed, so twelve times the monthly figure ($120, $264, $528) is our arithmetic, not a quoted charge.

The rows beginning "App Store" are in-app purchase items from the US listing, and they are dearer. The iPhone app charges $24.99, $39.99 and $84.99 a month, monthly billing only: $5.99, $10.99 and $25.99 more than the web monthly price, or about 32, 38 and 44 percent more. A year of the iOS Hobby & Student plan would come to $299.88, against $120 for ten dollars a month on the web. Google Play shows no price range in the data we read.

The App Store credit packs run from 100k credits for $5.89 to 4000k for $116.99. Two ladders share prices: 500k and 600k are both $22.49, and 1750k and 1900k are both $57.90. The listing does not say which a given account is offered, and the pack list may be partial. At $2.92 per 100,000 credits the largest pack costs about what Professional's credits do on the web ($29 for 1,000,000, or $2.90), so packs are not a cheap way round a plan. Web credit-pack prices were not recorded. See what Sudowrite costs for the plan-level view and how story app credits work for the general trap.

Trial, refunds and where the pages disagree

The pricing page says Start Free Trial · No credit card, cancel anytime. The docs trial page says that if Sudowrite is not for you, just let us know within the first 7 days and we'll not only cancel your plan but also refund you. The trial length is not stated. A refund implies a charge, which sits oddly beside "no credit card", and we do not resolve it. Documents stay exportable without a plan.

The refund rule is the clearest contradiction. The Terms say Due to the nature of digital services, we do not refund fees on cancellation. The docs, on the trial page (last updated February 17, 2026) and the plans page, promise a refund in the first week. Both are published and we do not know which prevails. If a refund matters to you, email before the week ends and keep the reply.

The Terms say the subscription renews automatically each month, and that you can cancel from the account membership page or by emailing. The pricing page promises an "EZ Cancel Guarantee". Our guide to cancelling a story app subscription has the general routine. We did not record what the Terms say about who owns generated text, so we make no claim on it.

The age rule and what we did not find

Users warrant that they are at least 18. The Terms also prohibit using the service to create sexually explicit content featuring minors or content that sexually exploits minors. That is a single line, not a detailed policy. We found no sentence stating that all characters are adults on the Terms, the Privacy Policy, the pricing page or the docs pages on plans, credits, the trial and model choice; the Terms bar content and bind users, not characters. The mobile apps are rated 4+ on the App Store and Everyone on Google Play, which says nothing about what Muse will write. For how the services here handle your data, see whether erotica apps are private.

Mobile apps and web version

The iPhone app is "Sudowrite - AI Novel Writing" from Human Plus Plus, Inc., free with in-app purchases and listed under Utilities. The Android app carries in-app purchases too. The web app is the full product.

Best Sudowrite alternatives

If you want unlimited generated text for a flat price, NovelAI sells three tiers with memory figures published; see NovelAI against Sudowrite. If you want control over which model's rules apply, NovelCrafter ships no model and lets you connect your own. For AI story tools aimed at readers rather than authors, the AI story section lists each one, and platform reviews covers the rest. More on how these tools work is in our entry on the AI story generator.

Final verdict