All Grammarly payments are non-refundable and payment obligations non-cancelable. There are no credits for partially used subscription periods. The only exception is Apple App Store purchases within 24 hours. Users report being charged on auto-renewal without clear notification and being refused refunds when requesting them.

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.

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.

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.

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 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.

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.

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.

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.

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.

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.

The desktop app is described as 'so broken it's basically unusable.' Users report constant lagging, crashes, and being forced to copy work to a web browser. After software updates, the app may fail to start or freeze at startup. Users must reinstall frequently to resolve issues.

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.

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.

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.