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Browser Extensions · head to head

Hemingway Editor vs Tampermonkey

Hemingway Editor logo

Hemingway Editor

Browser Extensions

Make your writing bold and clear

From
Free
Rated
-
Full reviewWebsite
Tampermonkey logo

Tampermonkey

Browser Extensions

The most popular userscript manager

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Hemingway Editor no grammar or spelling corrections; tool focuses only on style, readability, and clarity, leaving grammatical errors unflagged; Tampermonkey only source code up to version 2.9 is GPLv3; all newer versions are distributed under a proprietary license despite the extension itself being free to use
  • They diverge on capability: Hemingway Editor covers Readability analysis, Tampermonkey covers Userscript management.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Hemingway Editor and Tampermonkey actually diverge.

Attributes where Hemingway Editor and Tampermonkey differ
AttributeHemingway EditorTampermonkey
Pricing modelUnknownopen-source
PlatformsWeb, macOS, WindowsWeb, Windows, macOS, Linux, Android
Founded20132010

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

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 Hemingway Editor

  • Readability analysis
  • Sentence complexity
  • Passive voice detection
  • Adverb highlighting

Only in Tampermonkey

  • Userscript management
  • Script editor
  • Auto-update
  • Cloud sync
  • Safari support
  • Opera support

Both cover

  • Chrome support
  • Firefox support
  • Edge support

What people use each for

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

Hemingway Editor

  • Checking readability and flagging dense sentencesnot Tampermonkey
  • Grammar checking and proofreading a draftnot Tampermonkey
  • Adjusting tone before publishingnot Tampermonkey
  • Paraphrasing passages with the free web toolsnot Tampermonkey

Tampermonkey

  • Auto-run custom JavaScript to add features to specific websitesnot Hemingway Editor
  • Block ads, remove clutter, or reformat page layout via community/personal userscriptsnot Hemingway Editor
  • Run scripts sourced from Greasy Fork or similar userscript repositoriesnot Hemingway Editor
  • Automate repetitive web tasks such as form-filling or redirect skipping via installed scriptsnot Hemingway Editor

Where each one falls short

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

Hemingway Editor

  • No grammar or spelling corrections; tool focuses only on style, readability, and clarity, leaving grammatical errors unflagged
  • Cannot distinguish context for idioms and colloquialisms, sometimes suggesting inappropriate replacements that alter intended meaning
  • Free version cannot suggest fixes for highlighted issues, only displays problems without solutions
  • Not suitable for academic or formal writing where its simplicity bias penalizes legitimate complex sentence structures

Tampermonkey

  • Only source code up to version 2.9 is GPLv3; all newer versions are distributed under a proprietary license despite the extension itself being free to use
  • Under Manifest V3, GM_webRequest is not (yet) supported
  • Under Manifest V3, GM_xmlhttpRequest fires only one progress event instead of streaming progress, requiring a responseType: 'stream' workaround
  • Since v5.3.2, Chrome/Edge (MV3) requires the user to manually enable Developer Mode, or from Chrome 138+ a per-extension 'Allow User Scripts' toggle, before any userscript will run

Pricing, plan by plan

Hemingway Editor

Free
  • FreeFree
    • Readability checking
    • Sentence highlighting
    • Adverb detection
  • Hemingway Editor Plus Individual 5K$8.33/month
    • 5,000 AI sentence rewrites monthly
    • Advanced grammar fixes (unlimited)
    • Unlimited document review
  • Hemingway Editor Plus Individual 10K$12.5/month
    • 10,000 AI sentence rewrites monthly
    • Advanced grammar fixes (unlimited)
    • Unlimited document review
  • Hemingway Editor Plus Team 10K$12.5/month
    • 10,000 AI sentence rewrites per user monthly
    • Role-based admin controls
    • Priority support

Tampermonkey

Free

No published plan breakdown. See the Tampermonkey review.

Which should you pick?

Choose Hemingway Editor if

  • You need readability analysis.
  • You want to start without paying.
  • You work on Web, macOS, Windows.
  • You also want sentence complexity.
Hemingway Editor review

Choose Tampermonkey if

  • You need userscript management.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux, Android.
  • You also want script editor.
Tampermonkey review

Questions people ask

Is Hemingway Editor or Tampermonkey better?
Neither clearly leads. Hemingway Editor starts at Free and Tampermonkey at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Hemingway Editor or Tampermonkey?
Hemingway Editor starts at Free and Tampermonkey at Free.
Does Hemingway Editor or Tampermonkey run on more platforms?
Hemingway Editor runs on Web, macOS, Windows. Tampermonkey runs on Web, Windows, macOS, Linux, Android.
Can I use Hemingway Editor for free?
Both have a free tier, so you can try either at no cost before committing.
What is Hemingway Editor best used for?
Hemingway Editor is most often used for checking readability and flagging dense sentences, grammar checking and proofreading a draft, adjusting tone before publishing, paraphrasing passages with the free web tools. Of those, checking readability and flagging dense sentences and grammar checking and proofreading a draft are not what Tampermonkey is typically brought in for.
What can Hemingway Editor do that Tampermonkey cannot?
Hemingway Editor covers Readability analysis, Sentence complexity, Passive voice detection, Adverb highlighting. Tampermonkey covers Userscript management, Script editor, Auto-update, Cloud sync. Both handle Chrome support, Firefox support, Edge support.

Answered from the vendors’ own pages

Hemingway Editor: Is there a free version and what does it include?

Yes. The free web version at hemingwayapp.com includes readability scoring, highlighting of complex sentences, passive voice detection, and weak adverb flagging. No account needed. Hemingway Editor Plus ($8.33/month or $100/year) adds advanced grammar fixes, AI sentence rewrites (10,000 monthly on best value plan), and unlimited document feedback.

Source
Tampermonkey: How much does Tampermonkey cost?

Tampermonkey is completely free for all versions and across all supported browsers including Chrome, Edge, Safari, Opera, and Firefox.

Source
Hemingway Editor: Does Hemingway Editor work offline?

The free web version requires internet. The desktop version for Mac and Windows ($19.99 one-time payment) works fully offline after download, enabling distraction-free writing without network connectivity.

Source
Tampermonkey: Is Tampermonkey available on all browsers?

Yes, Tampermonkey is available on Chrome 120 and later, Microsoft Edge, Safari, Opera Next, and Firefox with no cost.

Source
Hemingway Editor: What writing metrics does Hemingway measure?

Hemingway grades readability level, highlights adverbs and weak words, flags passive voice constructions, marks complex or hard-to-read sentences in color (red for very hard, yellow for difficult), and suggests simpler alternatives for complex phrases.

Source
Hemingway Editor: Can I collaborate with others or share documents?

The web version allows pasting text directly, but Hemingway Editor itself does not have native collaboration or team features. Team plans on Hemingway Plus support $12.50/user/month pricing and role-based admin controls, but are primarily for shared workspace management rather than live document collaboration.

Source
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