Grammarly Problems & Issues
Real user-reported problems, complaints, and limitations for Grammarly. Based on analysis of 17 signals.
Overall score: 62/100
Issues by Category
Suggestions often incorrect or change intended meaning
Grammarly frequently suggests changes that technically improve grammar but alter intended meaning or remove stylistic choices. It marks perfectly acceptable words as issues, adds commas where unnecessary, and changes singular to plural without reason. Users report Grammarly makes their writing worse, not better.
Overly rigid suggestions harm creative writing
Suggestions feel overly rigid and repetitive, especially for creative or emotionally driven writing. Grammarly flags stylistic choices as mistakes and sacrifices unique text for 'automated perfection.' Writers report losing their voice when following all suggestions.
Plagiarism checker accuracy is poor
Grammarly's plagiarism checker scores below 40% accuracy in testing. It misses heavily paraphrased content and fails to detect much copied text. It also incorrectly flags common phrases as potential plagiarism. For serious academic or professional work, users need better tools like Turnitin.
AI detector falsely flags non-AI content
Grammarly detects AI in numerous situations where AI had no involvement. Users report original writing being flagged as AI-generated. Conversely, it misses actual AI writing while flagging regular content as copied. This inaccuracy creates problems for academic and professional users.
GrammarlyGO content sounds bland and generic
Content generated by GrammarlyGO sounds professional but bland. It works for basic business communication but not for building personal brand or creating engaging content. The AI features don't understand creative writing conventions or intentional style choices.
Weak spell-check doesn't recognize common misspellings
Grammarly's spell-check often doesn't know what users are trying to spell and offers no suggestions for common misspellings. This basic function that users expect to work flawlessly sometimes fails, undermining confidence in other suggestions.
AI update backlash - users hate forced generative features
Adding GrammarlyGO generative writing features has made the entire product dysfunctional for many users. People who just want basic grammar help don't want AI writing their content, but the new Grammarly pushes AI suggestions on everyone. Complaints flooding social media led some to cancel subscriptions.
Constant upgrade prompts disrupt writing flow
Grammarly constantly tries to upsell users to premium by showing colorful underlines then suggesting upgrades to fix them. These prompts interrupt writing flow and feel manipulative. Free users especially complain about being nagged to upgrade rather than getting useful assistance.
Grammarly icon replaced by Superhuman logo after Superhuman Go activation
After the company renamed itself Superhuman (October 2025), activating Superhuman Go swaps the Grammarly G icon and widget for a Superhuman logo or tab. Grammarly's own troubleshooting articles now open with this note because users think Grammarly stopped working. Suite plans also can't be merged with existing Grammarly subscriptions.
Icon obstruction blocks important buttons
The Grammarly icon and popup interface obstructs input and blocks important buttons on screen. When trying to select corrections from popups, they vanish and continue disappearing once brought back. This creates frustrating user experience issues.
Grammarly refund denied - refunds only where required by law
Grammarly's help center says you can cancel any time but refunds are issued only if required by law; App Store purchases must be refunded through Apple. Cancelling just stops auto-renewal, so users who forget an annual renewal ($144) or a $30 monthly charge usually cannot get money back.
Automatic renewal charges without clear notice
Users report being charged on automatic renewal without clear notification emails or reminders. Some say they were charged after a free trial without clear consent. The combination of auto-renewal and no-refund policy creates unexpected charges users can't recover.
Grammarly desktop app crashes, disappears or won't stay logged in
Grammarly for Windows and Mac is now the only supported way to use Grammarly in Word, but users report it crashing, the widget vanishing, and repeated logouts. Official fixes involve repairing .NET Framework on Windows, clearing saved credentials via Terminal on Mac, or reinstalling. The old floating widget was replaced by a tab on the right edge of the screen, which many users mistake for the app disappearing.
Requires internet - useless with slow connection
Grammarly doesn't work properly without internet, making it useless during travel, in areas with poor connectivity, or during service outages. Users dependent on the tool face productivity losses when connection is unavailable or slow.
Grammarly for Microsoft Office add-in retired - Word users forced to desktop app
Grammarly discontinued its Word add-in on Mac and is retiring Grammarly for Microsoft Office on Windows, ending updates and support. Users on Windows 10/11 with Office 2016+ must switch to Grammarly for Windows; older setups are pushed to the web editor or browser extension. Long Word documents with footnotes, tables or tables of contents still cause underlines to vanish or text corruption.
Slow customer support and refund denial
Users report slow support responses, especially for billing issues. Refund requests are denied citing policy rather than addressing user concerns. Some users wait days for responses to technical issues while being charged for service they can't use.
Privacy concerns with text sent to AI providers
Using GrammarlyGO means sending text to external AI providers, creating inherent privacy risks. Users working with confidential or sensitive information must accept this data exposure. While Grammarly has privacy policies, some organizations restrict use due to these concerns.
Regret Patterns
Common reasons users regret choosing Grammarly.
Auto-renewed for year with no refund possible
Users miss the renewal reminder email (or never receive it) and get charged $144 for an annual subscription they no longer want. Grammarly refuses refunds citing policy. Some users stopped using the tool months ago but are still charged.
AI features ruined simple grammar checking
Users who loved Grammarly for simple grammar help find the GrammarlyGO AI integration makes the tool cluttered and confusing. They just want spell check but now navigate around AI suggestions. Some cancel and seek simpler alternatives.
Plagiarism checker missed copied content
Students or professionals relying on Grammarly's plagiarism detection submit work that gets flagged by institutional tools like Turnitin. Grammarly's sub-40% accuracy missed content that was actually copied, causing academic or professional consequences.
Suggestions changed meaning of important text
Users blindly accepting suggestions find their intended meaning altered. In professional contexts - legal, medical, technical - these changes could have serious consequences. Learning to critically review rather than auto-accept comes after problems occur.
Desktop app crashes lost work
Users writing directly in Grammarly's desktop app experience crashes that lose unsaved work. The app's instability teaches users the hard way to always work in other applications with Grammarly as an overlay rather than trusting the standalone app.
Creative writing voice was lost following suggestions
Writers following Grammarly's suggestions find their unique voice replaced with generic, 'correct' prose. Their creative style - intentional fragments, rhythm, personality - gets edited out. They learn too late that Grammarly isn't for creative work.
Paid for premium features rarely used
Users upgrade for specific features like plagiarism checking or tone detection, then find they rarely use them. The basic grammar checking they actually need is available free. Annual commitment means paying for features that don't fit their workflow.
When Grammarly Breaks Down
Specific scenarios where Grammarly fails or underperforms.
Need reliable plagiarism detection
Grammarly's plagiarism checker has sub-40% accuracy, missing paraphrased content and much directly copied text. Users submitting academic or professional work need tools like Turnitin for reliable detection. Grammarly's check is decorative rather than functional.
Writing creative fiction or unique prose
Grammarly's rigid suggestions flag intentional style choices as errors and push toward generic 'correct' writing. Creative voice gets edited out if following suggestions. Fiction writers, poets, and stylistically unique writers need ProWritingAid or other creative-focused tools.
Require offline functionality
Grammarly is completely non-functional without internet. Users traveling, in poor connectivity areas, or during service outages lose all grammar checking capability. For offline needs, desktop tools like ProWritingAid or Hemingway Editor are required.
Working in languages other than English
Grammarly only supports English. Users writing in multiple languages or non-English content need LanguageTool (30+ languages) or Ginger (40+ languages). There's no Grammarly solution for multilingual workflows.
Need refund after subscription starts
Grammarly's no-refund policy means any subscription purchase is final. Users who sign up and immediately regret it, or whose situations change, lose their money. The annual commitment ($144) is particularly risky given no refund option.
Desktop app stability required
The desktop app crashes, lags, and is described as 'basically unusable.' Users needing reliable standalone application must use the web editor or browser extensions instead. For true desktop writing, other tools are more stable.
Want simple grammar checking without AI
GrammarlyGO AI integration clutters the interface for users wanting basic grammar help. Constant AI suggestions and prompts make simple editing complicated. LanguageTool or other focused grammar tools provide cleaner experiences.