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Writefull

writefull.com

From $12.50/mo Free plan WebWindowsmacOSAPIBrowser extension
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Spec score 9.2 #7 of 25 in AI writing assistants

What it is

Writefull provides AI language feedback, writing tools, and data insights for research writing. Its language models are trained on academic texts and suggest improvements to grammar, word use, style, and phrasing. Other tools can paraphrase, change style, split or join sentences, summarize or explain text, and generate titles and abstracts. Writefull integrates with Overleaf, offering LaTeX-tailored feedback, TeXGPT, and table and equation generators. Its Microsoft Word add-in works with Windows, Mac, and Word Online. The service is available on the web, Windows, macOS, and as a browser extension. The Overleaf extension supports Chrome, Chromium, and Brave; Writefull Revise supports Chrome, Firefox, Safari, and Chromium-based Edge. Revise returns edits through Track Changes and is limited to publishers and institutions. A free plan has limited quotas for language editing and rewriting. Writefull says it does not store users’ text, use text or interactions to train its AI, or sell data to third parties. Some features use third-party APIs, with user consent requested before text is sent.

Spec sheet

What it does
Writefull provides AI language feedback and writing assistance aimed at academic and research writing.Read 14 Oct 2026 · writefull.com
Purpose
Writefull provides AI language feedback, writing widgets, and data insights for research writing.Read 7 Oct 2026 · writefull.com
Free plan
YesRead 22 Sep 2026 · writefull.com
API
The Language API accepts batches of sentences or documents and returns corrections and quality metrics as JSON or Track Changes.Read 14 Oct 2026 · writefull.com
Security
Writefull says it uses technical and organizational measures to protect personal data from loss, unauthorized access, misuse, alteration, and disclosure.Read 7 Oct 2026 · writefull.com
Support
Writefull directs users to its FAQs, Help Center, and contact form for assistance.Read 7 Oct 2026 · writefull.com
Abstract Generator
The Abstract Generator creates an abstract from a supplied paper.Read 14 Oct 2026 · writefull.com
Academic editing
Its language models are trained on academic texts and provide grammar, word-use, style, and phrasing suggestions.Read 7 Oct 2026 · help.writefull.com
Academic language models
Its editing models were trained on millions of journal articles so suggestions follow research-writing usage.Read 14 Oct 2026 · writefull.com
Academizer
The Academizer converts informal sentences into academic-style wording.Read 14 Oct 2026 · writefull.com
API access
Writefull publishes no self-service API console or SDK download and directs prospective API users to contact [email protected].Read 14 Oct 2026 · writefull.com
API use cases
The API is used for language-quality evaluation, automated revision and proofreader assessment in publisher and editing workflows.Read 14 Oct 2026 · writefull.com
Browser extension
YesRead 22 Sep 2026 · writefull.com
Browser support
The Overleaf extension supports Chrome, Chromium and Brave, while Revise supports Chrome, Firefox, Safari and Chromium Edge.Read 14 Oct 2026 · help.writefull.com
Company headquarters
LinkedIn and Crunchbase place Writefull in Amsterdam, North Holland, Netherlands.Read 14 Oct 2026 · linkedin.com
Company size
LinkedIn lists Writefull as a privately held software-development company with 2–10 employees.Read 14 Oct 2026 · linkedin.com
Data handling
Writefull says it does not store users’ text or use text or interactions to train its AI, and it does not sell data to third parties.Read 7 Oct 2026 · writefull.com
Documentation
The Help Center includes installation, account, troubleshooting, support, Word, Overleaf and Revise guides plus FAQs.Read 14 Oct 2026 · help.writefull.com
Founders
Crunchbase identifies Juan Castro as founder and CEO, while Digital Science’s 2016 announcement also names Alberto Villar as a founder.Read 14 Oct 2026 · crunchbase.com
Institution reach
Digital Science reported in 2023 that Writefull was used by students and researchers at more than 1,500 institutions.Read 14 Oct 2026 · digital-science.com
Language editing
The service checks grammar, vocabulary, spelling, punctuation, phrasing and style in research text.Read 14 Oct 2026 · writefull.com
Licence
The service is proprietary and governed by terms that restrict use to personal non-commercial purposes and protect its content by copyright.Read 14 Oct 2026 · writefull.com
License limits
Writefull Revise is available to publishers and institutions only, while group licenses cover 2 to 100 people on the product pages.Read 7 Oct 2026 · writefull.com
Limit: character quota
A Capterra reviewer reported that the 2,000-character limit makes Title Generator and Abstract Generator inputs too short for many selections.Read 14 Oct 2026 · capterra.com
Limit: language coverage
Chrome-extension reviewers complain that support is primarily limited to English and request languages such as Portuguese.Read 14 Oct 2026 · chrome-stats.com
Limit: LaTeX suggestions
Chrome-extension reviewers report occasional incorrect suggestions, paraphrasing that disrupts LaTeX commands and unpredictable interface behavior.Read 14 Oct 2026 · chrome-stats.com
Limit: missing integrations
A Capterra reviewer asked for integration with more platforms, specifically Google Docs.Read 14 Oct 2026 · capterra.com
Limit: suggestion fit
Capterra reviewers reported that some suggestions do not match the intended tone and that one user observed a gendered replacement problem.Read 14 Oct 2026 · capterra.com
Microsoft Word
Writefull for Word is available as an add-in for Windows, Mac, and Word Online.Read 7 Oct 2026 · help.writefull.com
Overleaf
Writefull integrates with Overleaf and includes LaTeX-tailored language feedback, TeXGPT, and table and equation generators.Read 7 Oct 2026 · writefull.com
Overleaf integration
Writefull can be enabled from Overleaf account settings and provides research-language tools inside the editor.Read 14 Oct 2026 · overleaf.com
Ownership
Digital Science announced that it fully acquired Writefull on November 21, 2023; it had been a part-owner since 2018.Read 14 Oct 2026 · digital-science.com
Paraphraser
The Paraphraser rewrites selected text at three levels.Read 14 Oct 2026 · writefull.com
Praise: academic improvement
Capterra reviewers repeatedly praise clearer, more formal academic writing and easy-to-use suggestions.Read 14 Oct 2026 · capterra.com
Praise: Overleaf workflow
Chrome-extension reviewers repeatedly praise contextual academic corrections, productivity gains and integration with Overleaf.Read 14 Oct 2026 · chrome-stats.com
Privacy claim
Writefull says its own service does not store submitted text or use text and interactions to train its models.Read 14 Oct 2026 · help.writefull.com
Rating on Capterra
4.8 out of 5 from 5 reviews.Read 14 Oct 2026 · capterra.com
Rating on Chrome extension listing
4.40 out of 5 from 131 ratings for Writefull for Overleaf.Read 14 Oct 2026 · chrome-stats.com
Rating on G2
0.0 out of 5 from 0 reviews.Read 14 Oct 2026 · g2.com
Rating on GetApp
4.8 out of 5 from 5 reviews.Read 14 Oct 2026 · getapp.com
Rating on Microsoft Marketplace
4.0 out of 5 from 27 ratings.Read 14 Oct 2026 · marketplace.microsoft.com
Revise access
Writefull Revise is available only to publishers and institutions and returns document edits using Track Changes.Read 7 Oct 2026 · writefull.com
Security infrastructure
Writefull states that its servers are in the Netherlands and that its infrastructure is ISO 27001 compliant.Read 14 Oct 2026 · getapp.com
TeXGPT
TeXGPT generates LaTeX code for tables, formulas, equations and related tasks in Overleaf.Read 14 Oct 2026 · writefull.com
Third-party AI processing
Paraphrase, Explain, Summarize and several rewrite tools can send text to OpenAI or Anthropic, whose retention policies apply temporarily.Read 14 Oct 2026 · help.writefull.com
Third-party APIs
Some features use third-party APIs, and Writefull says users are informed and asked for consent before text is sent to those services.Read 7 Oct 2026 · writefull.com
Title Generator
The Title Generator proposes a title from an abstract or paper text.Read 14 Oct 2026 · writefull.com
Usage cap
The end-user terms limit users to 30 documents per 30 days, 10 documents per 24 hours or 600,000 characters per 30 days.Read 14 Oct 2026 · writefull.com
Word integration
Writefull for Word works in Windows, Mac and Word Online through a Word add-in.Read 14 Oct 2026 · help.writefull.com
Writefull Cite
Writefull lists Cite as a separate product for citation-related writing support.Read 14 Oct 2026 · writefull.com
Writefull Revise
Revise accepts uploaded text, reports language quality and returns a document with Track Changes corrections.Read 14 Oct 2026 · writefull.com
Writing tools
Writefull offers paraphrasing, style changes, sentence splitting and joining, summaries, explanations, and title and abstract generation.Read 7 Oct 2026 · writefull.com

Plans and prices

Free Free Free quota · limited feature usage Read 14 Oct 2026 · my.writefull.com
Free Free Free quota of Writefull tools Read 7 Oct 2026 · my.writefull.com
Premium $150 a year annual price shown Unlimited individual writing support · access to Word, Overleaf, Writefull X, Revise and Cite Read 14 Oct 2026 · my.writefull.com
Premium $150 a year Annually Unlimited writing support for individuals Read 7 Oct 2026 · my.writefull.com
Group $285 a year Annually Up to 100 users · $15.00 savings shown Read 7 Oct 2026 · my.writefull.com
Group $285 a year annual price shown Groups of up to 100 users · seat count entered separately · $15.00 saving shown Read 14 Oct 2026 · my.writefull.com
Institution Priced on request Institution-wide access · contact sales Read 14 Oct 2026 · my.writefull.com

Every Writefull plan and price →

Strong points and limits

Strong points

  • Academic-text-trained language suggestions
  • Overleaf integration includes LaTeX-tailored feedback
  • Word add-in supports Windows, Mac, and Word Online
  • Free plan available with limited quotas
  • Writefull says user text is not stored

Limits

  • Free language editing and rewriting have limited quotas
  • Revise is limited to publishers and institutions
  • Some features send text to third-party APIs with consent

Who it suits

Writefull suits researchers who want language editing and writing assistance in Word or Overleaf. Its Revise service is specifically available to publishers and institutions, while group and institution plans address broader access.

Verdict

Writefull brings research-focused language feedback and writing tools into Overleaf and Word, with a free option for limited use. Review the quota limits and third-party API disclosures against your intended workflow.

Where Specifiction places it

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