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Browser Extensions · head to head

Arc vs Grammarly

Arc logo

Arc

Browser Extensions

Chromium-based browser organized around user workflows

From
Free
Rated
-
Full reviewWebsite
Grammarly logo

Grammarly

Documentation

Great writing, simplified

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Arc no longer receiving active feature development as of May 2025, entering maintenance mode; Grammarly occasional false positives and grammatically incorrect suggestions that can introduce errors
  • They diverge on capability: Arc covers Spaces and Profiles, Grammarly covers Grammar checking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Arc and Grammarly actually diverge.

Attributes where Arc and Grammarly differ
AttributeArcGrammarly
Pricing modelFreeUnknown
PlatformsmacOS, Windows, iOSWeb, macOS, Windows, iOS, Android
CategoryBrowser ExtensionsDocumentation
FoundedUnknown2009

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Arc

  • Spaces and Profiles
  • Split View
  • Themes
  • Privacy-First Design
  • Chromium Updates

Only in Grammarly

  • Grammar checking
  • Spelling correction
  • Punctuation
  • Clarity suggestions
  • Engagement feedback
  • Delivery insights
  • Plagiarism checker
  • Citation generator

What people use each for

The jobs each tool is most often brought in to do.

Arc

  • Organizing work across multiple projects within one browsernot Grammarly
  • Separating personal and professional browsing with spacesnot Grammarly
  • Privacy-conscious web browsing without trackingnot Grammarly
  • Tab and window management for productivitynot Grammarly

Grammarly

  • Email writingnot Arc
  • Document editingnot Arc
  • Academic writingnot Arc
  • Business communicationnot Arc
  • Content creationnot Arc

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Arc

  • No longer receiving active feature development as of May 2025, entering maintenance mode
  • Limited cross-platform availability compared to mainstream browsers
  • Smaller ecosystem of extensions compared to Chrome
  • Focused on macOS and Windows, with limited iOS support

Grammarly

  • Occasional false positives and grammatically incorrect suggestions that can introduce errors
  • Privacy concerns about sending text to Grammarly's servers for analysis
  • AI capabilities sometimes produce hallucinations and fabricated citations that appear grammatically correct

Pricing, plan by plan

Arc

Free
  • ArcFree
    • Spaces and profiles organization
    • Split view customization
    • Themes and personalization

Grammarly

Free
  • FreeFree
    • Basic grammar and spelling checks
    • Tone visibility
    • 100 AI prompts per month
  • Pro$12/month
    • Sentence rewrites
    • Tone adjustment
    • Plagiarism and AI detection

Which should you pick?

Choose Arc if

  • You need spaces and profiles.
  • You want to start without paying.
  • You work on macOS, Windows, iOS.
  • You also want split view.
Arc review

Choose Grammarly if

  • You need grammar checking.
  • You want to start without paying.
  • You work on Web, macOS, Windows, iOS, Android.
  • You also want spelling correction.
Grammarly review

Questions people ask

Is Arc or Grammarly better?
Neither clearly leads. Arc starts at Free and Grammarly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arc or Grammarly?
Arc starts at Free and Grammarly at Free.
Does Arc or Grammarly run on more platforms?
Arc runs on macOS, Windows, iOS. Grammarly runs on Web, macOS, Windows, iOS, Android.
Can I use Arc for free?
Both have a free tier, so you can try either at no cost before committing.
What is Arc best used for?
Arc is most often used for organizing work across multiple projects within one browser, separating personal and professional browsing with spaces, privacy-conscious web browsing without tracking, tab and window management for productivity. Of those, organizing work across multiple projects within one browser and separating personal and professional browsing with spaces are not what Grammarly is typically brought in for.
What can Arc do that Grammarly cannot?
Arc covers Spaces and Profiles, Split View, Themes, Privacy-First Design. Grammarly covers Grammar checking, Spelling correction, Punctuation, Clarity suggestions.

Answered from the vendors’ own pages

Arc: Does Arc Browser cost anything to use?

Arc is completely free to download and use with no subscription required. All features are available at no cost.

Source
Grammarly: Does Grammarly have a free version?

Yes, Grammarly offers a free tier with basic spelling, grammar, and punctuation checks, tone visibility, and 100 AI prompts per month. The Pro plan ($12/month annual) adds sentence rewriting, plagiarism detection, and 2,000 AI prompts.

Source
Arc: What operating systems does Arc support?

Arc is available on macOS, Windows, and iOS. Windows and mobile versions are available for download.

Source
Grammarly: What platforms does Grammarly work with?

Grammarly works across 1 million+ apps including Google Docs, Microsoft Word, Outlook, Slack, Gmail, and web browsers. It also integrates with productivity tools like Asana, Jira, Monday.com, Confluence, and HubSpot.

Source
Arc: Will Arc continue to receive new features?

As of May 2025, Arc entered maintenance mode with no new features planned. The Browser Company's focus has shifted to Dia browser, though Arc continues to receive security updates.

Source
Grammarly: Can I use Grammarly offline?

Grammarly requires an internet connection to function, though the browser extension works with some offline text areas. For offline use, the desktop app and browser extensions sync when reconnected.

Source
Grammarly: What is included in the Enterprise plan?

The Enterprise plan includes unlimited team members, dedicated support, custom roles and permissions, data loss prevention, bring-your-own-key encryption, and unlimited AI prompts. Pricing is custom and available by contacting sales.

Source
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