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StealthWriter

stealthwriter.ai

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Spec score 8.5 #6 of 24 in AI Paraphrasing Tools

What it is

StealthWriter rewrites AI-generated or AI-assisted text to improve phrasing, flow, and clarity, and includes an AI detector. Its humanizer provides light, medium, and aggressive rewrite levels. The detector estimates whether submitted text may be flagged as AI-generated and gives overall and sentence-level feedback. It accepts text from tools such as ChatGPT, Claude, Gemini, Llama, Mistral, Copilot, and Jasper; listed supported languages include Spanish, French, German, Italian, Portuguese, and Dutch. StealthWriter runs in modern browsers on desktop, tablet, and mobile, with Android, iOS, and web listed as platforms. The free plan allows 10 humanizations and 10 AI scans daily, up to 1,000 words per input, and includes Ghost 5.2 Mini. Paid plans start at $20 a month and allow up to 5,000 words per input, with Ghost 5.2 Pro and Ghost Legacy also included. The public detector demo has a 500-word scan limit and daily limits. The maker advises reviewing rewritten text because a rewrite can alter details or how a claim is expressed.

Spec sheet

What it does
StealthWriter rewrites AI-assisted text for more natural phrasing and includes an AI detector.Read 15 Oct 2026 · stealthwriter.ai
Purpose
StealthWriter rewrites AI-generated or AI-assisted text to improve phrasing, flow, and clarity, and includes AI detection features.Read 29 Sep 2026 · stealthwriter.ai
Audience
The About page identifies writers, marketers, and professionals seeking clearer, more natural AI-assisted drafts as its intended users.Read 29 Sep 2026 · stealthwriter.ai
Free plan
YesRead 20 Sep 2026 · stealthwriter.ai
API
The FAQ says there is no public API currently, with a possible future API.Read 15 Oct 2026 · stealthwriter.ai
Integrations
No third-party integrations are listed on the reviewed official product, pricing or FAQ pages.Read 15 Oct 2026 · stealthwriter.ai
Security
The privacy policy lists TLS/SSL encryption in transit and at rest, regular security assessments and vulnerability testing, access controls, and employee data protection training.Read 29 Sep 2026 · stealthwriter.ai
Privacy
The privacy policy says submitted text is classified by a moderation tool, processed or rejected, not stored, and not used to train models; it may be shared with infrastructure providers needed to run the feature.Read 29 Sep 2026 · stealthwriter.ai
Compliance
The privacy policy says the company complies with GDPR, CCPA, and other relevant data protection regulations.Read 29 Sep 2026 · stealthwriter.ai
Support
Support is available at [email protected] and +1 (307) 998-3768 Monday through Friday, 9:00 AM–5:00 PM Mountain Time; the contact page says it typically responds within 24 business hours.Read 29 Sep 2026 · stealthwriter.ai
Headquarters
Sheridan, Wyoming, United StatesRead 28 Sep 2026 · stealthwriter.ai
Academic-use restriction
Terms prohibit using StealthWriter for academic cheating, misrepresenting authorship or evading plagiarism systems.Read 15 Oct 2026 · stealthwriter.ai
Acceptable use
The Acceptable Use Policy prohibits using the service to misrepresent authorship or bypass AI detection, plagiarism, academic, workplace, or platform review systems.Read 29 Sep 2026 · stealthwriter.ai
AI detector
The public detector accepts up to 500 words without an account and provides an overall estimate plus sentence feedback.Read 15 Oct 2026 · stealthwriter.ai
Alternative rewrites
Users can click individual sentences to choose among alternative phrasings.Read 15 Oct 2026 · stealthwriter.ai
Browser extension
The FAQ says no browser extension is available and places one on the future roadmap.Read 15 Oct 2026 · stealthwriter.ai
Changelog: detector V2
The April 22, 2026 changelog says the V2 detector was introduced with improved accuracy and consistency.Read 15 Oct 2026 · stealthwriter.ai
Changelog: Ghost 5.2
The May 5, 2026 changelog introduced Ghost 5.2 Mini and Pro while retaining Ghost 5.1 and 4.6 as Legacy models.Read 15 Oct 2026 · stealthwriter.ai
Company headquarters
The listed mailing address is 30 N Gould St Ste R, Sheridan, Wyoming 82801, United States.Read 15 Oct 2026 · stealthwriter.ai
Company owner
StealthWriter identifies AiVantage LLC as its legal business and Maher Mansour as owner.Read 15 Oct 2026 · stealthwriter.ai
Compliance limitation
Terms disclaim guarantees that the service will be uninterrupted, secure or error-free.Read 15 Oct 2026 · stealthwriter.ai
Data handling claim
StealthWriter states that submitted text is not retained after processing, shared with third parties or used for training.Read 15 Oct 2026 · stealthwriter.ai
Deep Scan
Deep Scan analyzes text sentence by sentence and uses color-coded highlights to show flagged passages.Read 15 Oct 2026 · stealthwriter.ai
Detection feedback
The AI detector estimates how likely submitted text is to be flagged as AI-generated and provides overall and sentence-level feedback.Read 29 Sep 2026 · stealthwriter.ai
Detector demo limit
The public detector demo accepts up to 500 words per scan, recommends at least 100 words, and applies daily demo limits.Read 29 Sep 2026 · stealthwriter.ai
Detector limitation
StealthWriter says detector scores estimate AI likelihood and cannot prove authorship.Read 15 Oct 2026 · stealthwriter.ai
Documentation and support
Public support consists of an FAQ, email, phone support Monday through Friday, and a Discord community.Read 15 Oct 2026 · stealthwriter.ai
Founded year
The official About page does not state a founding year.Read 15 Oct 2026 · stealthwriter.ai
Google Play developer discrepancy
The Google Play app is published by Raj Chourasiya in Jabalpur, India, rather than AiVantage LLC.Read 15 Oct 2026 · play.google.com
Google Play listing
A separate Google Play app named Stealth Writer offers text, image and document detection plus humanization; the listing shows 100+ downloads and no displayed star rating.Read 15 Oct 2026 · play.google.com
Humanizer
The humanizer offers light, medium and aggressive rewrite levels and returns rewritten text in seconds.Read 15 Oct 2026 · stealthwriter.ai
Humanizer controls
The humanizer offers light, medium, and aggressive rewrite levels.Read 29 Sep 2026 · stealthwriter.ai
Included word limit
5000Read 20 Sep 2026 · stealthwriter.ai
Independent review: document uncertainty
HumanPen reports that public pages do not establish an editable DOCX round trip.Read 15 Oct 2026 · humanpen.net
Independent review: long-input strength
Undetected.ai describes the 5,000-word paid input cap as unusually large compared with competing humanizers.Read 15 Oct 2026 · undetected.ai
Independent review: value concern
Undetected.ai says higher tiers mainly add daily capacity while keeping the same core capabilities and 5,000-word input cap.Read 15 Oct 2026 · undetected.ai
Independent review: workflow limit
Undetected.ai says the lack of API and browser extension prevents automated pipelines and in-place editing.Read 15 Oct 2026 · undetected.ai
Input review
The maker advises users to review rewritten text because rewriting can change a detail or how a claim is expressed.Read 29 Sep 2026 · stealthwriter.ai
Language support
The FAQ names Spanish, French, German, Italian, Portuguese, Dutch and other languages as supported.Read 15 Oct 2026 · stealthwriter.ai
Languages
The FAQ lists Spanish, French, German, Italian, Portuguese, and Dutch among supported languages.Read 29 Sep 2026 · stealthwriter.ai
Licence
No open-source licence or source-code repository is identified on the reviewed official pages.Read 15 Oct 2026 · stealthwriter.ai
Limit: detector performance
A Trustpilot reviewer reports that Turnitin still flagged rewritten academic work as AI-generated.Read 15 Oct 2026 · trustpilot.com
Limit: support and refunds
Trustpilot complaints include delayed responses, unresolved refund requests and account-access problems.Read 15 Oct 2026 · trustpilot.com
Models
The Free plan includes Ghost 5.2 Mini; paid plans include Ghost 5.2 Mini, Ghost 5.2 Pro, and Ghost Legacy models.Read 29 Sep 2026 · stealthwriter.ai
Platforms and API
The FAQ describes StealthWriter as a browser-based web app with no required download, extension, or public API; it says the service works in modern browsers on desktop, tablet, and mobile.Read 29 Sep 2026 · stealthwriter.ai
Praise: support
Trustpilot reviewers repeatedly praise prompt, professional replies and helpful staff members.Read 15 Oct 2026 · trustpilot.com
Praise: usability and output
Trustpilot reviewers describe the interface as easy to use and some say the rewriting and detection tools work well.Read 15 Oct 2026 · trustpilot.com
Rating on Capterra
0.0 out of 5 from 0 reviews.Read 15 Oct 2026 · capterra.com
Rating on G2
0.0 out of 5 from 0 reviews.Read 15 Oct 2026 · g2.com
Rating on Trustpilot
3.5 out of 5 from 74 reviews.Read 15 Oct 2026 · trustpilot.com
Refund limitation
Refunds are available within 24 hours only when the account has not been used since purchase or renewal.Read 15 Oct 2026 · stealthwriter.ai
SDKs
No SDK is documented on the public official pages reviewed.Read 15 Oct 2026 · stealthwriter.ai
Security statement
Payment policy says Paddle or Stripe process payments and StealthWriter does not store full card numbers or security codes.Read 15 Oct 2026 · stealthwriter.ai
Self-hosting
The reviewed official pages describe a hosted web app and provide no self-hosting option.Read 15 Oct 2026 · stealthwriter.ai
Supported source models
The FAQ names ChatGPT, Claude, Gemini, Llama, Mistral, Copilot and Jasper as compatible sources of AI text.Read 15 Oct 2026 · stealthwriter.ai
Supported source tools
The FAQ says StealthWriter works with text from ChatGPT, Claude, Gemini, Llama, Mistral, Copilot, and Jasper, among others.Read 29 Sep 2026 · stealthwriter.ai
System requirements
The service requires only a modern browser and is described as responsive on desktop, tablet and mobile.Read 15 Oct 2026 · stealthwriter.ai

Plans and prices

Free Free 10 humanizations/day · 10 AI scans/day · 1,000 words/input · Ghost 5.2 Mini Read 15 Oct 2026 · stealthwriter.ai
Starter $20 a month $20 USD/mo; $200/year 50 humanizations/day · 50 AI scans/day · 5,000 words/input · Ghost 5.2 Mini, Pro and Legacy Read 15 Oct 2026 · stealthwriter.ai
Plus $50 a month $50 USD/mo; $500/year 150 humanizations/day · 150 AI scans/day · 5,000 words/input · Ghost 5.2 Mini, Pro and Legacy Read 15 Oct 2026 · stealthwriter.ai
Pro $100 a month $100 USD/mo; $1,000/year 350 humanizations/day · 350 AI scans/day · 5,000 words/input · Ghost 5.2 Mini, Pro and Legacy Read 15 Oct 2026 · stealthwriter.ai
Business $200 a month $200 USD/mo; $2,000/year 800 humanizations/day · 800 AI scans/day · 5,000 words/input · priority team support Read 15 Oct 2026 · stealthwriter.ai
Scale $400 a month $400 USD/mo; $4,000/year 2,000 humanizations/day · 2,000 AI scans/day · 5,000 words/input · priority team support Read 15 Oct 2026 · stealthwriter.ai
Enterprise Priced on request Custom Custom daily humanizations · custom daily scans · 5,000 words/input · custom billing · dedicated support Read 15 Oct 2026 · stealthwriter.ai

Every StealthWriter plan and price →

Strong points and limits

Strong points

  • Offers three humanizer rewrite levels.
  • Detector gives overall and sentence-level feedback.
  • Free plan includes 10 daily humanizations and scans.
  • Works in modern browsers on desktop, tablet, and mobile.
  • Lists support for six languages beyond English.

Limits

  • Free inputs are limited to 1,000 words.
  • Public detector demo accepts up to 500 words per scan.
  • No public API is available.
  • Rewrites can change details or claim phrasing.

Who it suits

StealthWriter is aimed at writers, marketers, and professionals seeking clearer drafts from AI-assisted text. It may also suit users who want sentence-level detector feedback, provided they review rewritten text for changes in meaning or detail.

StealthWriter in depth

Read the full write-up

Overview

StealthWriter is a browser-based service for rewriting AI-assisted text and estimating whether text may be flagged as AI-generated. It best suits writers and marketers refining drafts who want rewrite controls and detector feedback together. Its main strength is that combination; its main caution is that rewritten wording can alter details or claims, so it needs editorial review.

Its humanizer offers light, medium, and aggressive rewrite levels, while the detector gives an overall estimate and sentence-level feedback. The detector can point to passages to revisit, but it is an estimate rather than a guarantee of how another system will assess the text. The public demo accepts up to 500 words per scan, recommends at least 100, and applies daily limits.

StealthWriter says it works with text from ChatGPT, Claude, Gemini, Llama, Mistral, Copilot, and Jasper, among others. Supported languages include Spanish, French, German, Italian, Portuguese, and Dutch. Its acceptable-use policy prohibits misrepresenting authorship or using the service to bypass AI-detection, plagiarism, academic, workplace, or platform review.

Key features

Adjustable rewriting: Light, medium, and aggressive levels suit different degrees of revision. The choice is useful for polishing phrasing, but more substantial changes make checking meaning and factual details particularly important.

Detection feedback: Overall and sentence-level estimates can help users identify text to reconsider. They should inform an editing decision, not stand in for one.

Model options: Free users get Ghost 5.2 Mini. Paid plans add Ghost 5.2 Pro and Ghost Legacy, giving subscribers additional model choices.

Privacy and security: Submitted text is assessed by a moderation tool, then processed or rejected; it is not stored or used to train models. It may be shared with infrastructure providers needed to run the feature. The privacy policy describes encryption in transit and at rest, access controls, regular security and vulnerability assessments, and employee data-protection training; it also says the company complies with GDPR, CCPA, and other relevant regulations.

Support is available by email and phone Monday through Friday, 9:00 AM–5:00 PM Mountain Time, with a typical response within 24 business hours.

Pricing

The free plan costs nothing and includes 10 humanizations and 10 AI scans per day, a 1,000-word input limit, and Ghost 5.2 Mini. That is a practical way to try the core workflow, but the daily quotas and shorter input cap make it less suitable for heavier use.

Starter costs $20 a month (billed $20 USD/mo) and raises the daily quotas to 50 humanizations and 50 scans, with a 5,000-word input limit and all three models. It is the entry paid tier for regular individual use. Plus costs $50 a month (billed $50 USD/mo) for 150 of each daily operation; Pro costs $100 a month (billed $100 USD/mo) for 350. These tiers retain the same input limit and model set, so their practical distinction is daily volume.

Business costs $200 a month (billed $200 USD/mo) for 800 humanizations and scans per day, a 5,000-word input limit, and priority team support. Scale costs $400 a month (billed $400 USD/mo) for 2,000 of each per day, with the same input limit and priority team support. They suit higher-volume workflows; the stated plan benefits do not describe different input limits. Enterprise has custom pricing and a 5,000-word input limit.

There is no public API, so the service is a poor fit for teams that need to integrate rewriting into another product or automated workflow.

Platforms

StealthWriter runs as a web app in modern browsers on desktop, tablet, and mobile; no download or extension is required. Android and iOS are supported through this browser-based service, rather than a required native-app installation.

Who it's for

Writers, marketers, and other professionals seeking clearer phrasing in AI-assisted drafts are the natural audience. It is also useful to people who want sentence-level detector feedback alongside rewriting. It is not the right choice for anyone seeking to disguise authorship or evade review, uses its policy expressly prohibits.

Pros and cons

Pro: Rewriting controls and sentence-level detection feedback sit in one service, helping users move from an estimate to targeted editing.

Pro: The free tier provides daily access to both humanization and scans, with no paid commitment required to try the workflow.

Con: Free inputs are capped at 1,000 words and paid inputs at 5,000, which constrains longer documents to smaller pieces.

Con: Rewriting can shift details or claims, so output requires review rather than direct reuse.

Con: There is no public API or extension, limiting integration and users who want an add-on workflow.

Alternatives

For lighter use or different platform needs, compare WriteHuman, HumanizeAI.io, Humanizer, Rephrasy, The AI Humanizer, Humanize AI, Humbot, and StealthGPT. WriteHuman's free plan allows three humanizer requests a month, 250 words per request, and 10 detection checks, and it supports an API and extension. HumanizeAI.io offers unlimited free words overall, though requests have limited words and free requests without signup return tomorrow. Humanizer's free offer is one 150-word humanization without sign-up. Rephrasy's Growth plan is $8.25 a month, billed $99 yearly, for 100 monthly humanizations of up to 2,000 words each, plus a Chrome extension and one custom writing style. The AI Humanizer's free tier provides 500 words per day. Humanize AI's free plan gives 1,500 words per month and 300 words per check. Humbot's Basic plan costs $7.99 a year, billed annually, and includes 3,000 basic words and 1,000 advanced words per month with a 500-word input limit. StealthGPT offers a pay-as-you-go Super plan at $0.05 as a one-time purchase, billed $0.05 per 100 words, with no subscription.

For broader comparisons, browse AI Text Humanizers, AI Paraphrasing Tools, and AI writing assistants.

Verdict

StealthWriter is a sensible choice for writers and marketers who want adjustable AI-draft rewriting and detector feedback in a browser, with a free tier that makes occasional use possible. Choose a paid plan when its daily quotas and model options justify the monthly cost; look elsewhere if you need an API, longer inputs, or rewriting without the need to scrutinize changes in meaning.

Verdict

StealthWriter combines rewriting controls with AI-detection estimates and feedback. Its free daily allowances and paid input limits are specified, but rewritten text merits review for changes in details or claims.

Where Specifiction places it

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