Writing & AI tools / Grammar checker15 tools
Best grammar checkers
Find and fix grammar, spelling and style problems. Facts come from each tool's own pages, and every score says where it comes from. How we rank
- Tools
- 15
- Researched
- 10
- Free option
- 7
- Only listed
- 5
Ranked by signals we can measure or quote: website health, the facts each tool's own pages state, and community discussion. Nothing here has been hands-on tested yet, so this is not a quality test. How the signals rank works
Quick answer
- Files stay on your device: Hemingway Editor
Based on what each tool's own pages say. A tool is left out when its pages say it varies or do not say. Details are listed under each tool.
Want two of these head to head? Compare tools side by side.
Details and sources
- Free tier
- Free plan limits: grammar, spelling and punctuation checks; line editing reports 2 runs per report per day on up to 500 words; 10 rephrases per day; 3 Creative Nudges and 3 Sparks per day; 3 Story Canvas idea feedback runs. Plagiarism checks cost extra.
- Paid plan
- Prices shown in Indian rupees (page also shows the free plan as $0). Premium: 1650/month, 550/month billed 6600/year, or 21945 lifetime. Premium Pro: 1980/month, 660/month billed 7920/year, or 38445 lifetime. Yearly and lifetime have a 3-day money-back guarantee; monthly is not refundable.
- Signup
- Not stated. Free plan button reads 'Try for free' and links to sign-up.
- Watermark
- Not stated.
- Where files go
- Submitted texts are processed to return reports and suggestions. For grammar checking, submitted texts and improvements are deleted once checking is complete. Documents saved in the Web Editor are encrypted and stored in the cloud. Personal data is stored and processed in the UK and other countries. Policy says texts are not used to improve the services.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Free plan gives basic writing help and AI detector checks up to 2,000 characters per check, 20 snippets, 5 files per detector batch, on free domains only. Advanced suggestions, Autocomplete and Rephrase are not included.
- Paid plan
- Pro is $25 per month, or $12 per month billed annually, with AI detector checks up to 100,000 characters and 10 files per batch. API is usage-based with a $5 one-time minimum. Enterprise starts at 10 seats at $15 per seat per month.
- Signup
- An account is required for the Pro trial and subscribing. Not stated for the free plan.
- Watermark
- Not stated.
- Where files go
- Privacy policy says content is stored by Sapling and used only to improve the service, and services are hosted in the United States. No retention period is given.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Not stated.
- Paid plan
- Ginger Software offers Premium plans. The page says: “Services. Premium Plans . Ginger Business . Ginger Education . Grammar API.”
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-04. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Details and sources
- Free tier
- Free plan (shown as 0 INR/month on the India page) covers mistake correction, tone visibility and 100 AI prompts per month. Rewrites, tone adjustment, plagiarism and AI-text detection are not in Free.
- Paid plan
- Plus is shown as 392 INR per member per month billed annually, or 1,000 INR billed monthly (India page; the page says it is only available in certain countries). Enterprise: contact sales, no price shown.
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-01. Sources: Plans. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Free Essential plan covers spelling and grammar, thesaurus, and use in Google Docs, Word, browser extensions and the web app. No usage limits are listed. Style improvements, sentence rewriting and plagiarism checks are not included.
- Paid plan
- Pro is US$9.95 per month and adds style improvements, structural suggestions, sentence rewriting and 50 plagiarism checks per month. Teams is US$7.95 per user per month. A yearly toggle exists but yearly prices are not shown.
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Privacy policy says submitted information may be sent to a cloud-based server and is processed in the USA. Text snippets are retained to run the service, and some are kept even after a deletion request. No retention period is given.
From the tool's own pages, checked 2026-11-01. Sources: Pricing, Privacy policy. Prices and limits change; check the tool before you rely on them.
- 6Free optionNeeds signupFiles stay on your deviceHealth 3.9Community 3.5
Details and sources
- Free tier
- The service includes a free version of the web app. The page says: “This policy covers our web app, including its free version and Editor Plus.”
- Paid plan
- Not stated.
- Signup
- An account is required to access paid services. The page says: “We need certain account and payment information to create your account and provide paid services.”
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Privacy. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Details and sources
- Free tier
- Not stated.
- Paid plan
- Not stated. The fetched pricing page lists no plans or prices; it only mentions billing in local currencies.
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-01. Sources: Pricing. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- Some modes are free with a 600-word limit and no daily limit, per the page. The input box shows a 400-word limit, so the page is inconsistent. Other modes are marked premium.
- Paid plan
- Silver $4.55 per week (7-day validity), Gold $9.55 per month, Diamond $0.99 per week or $47.52 billed annually, as shown on the home page. Paid word limit up to 1,500 per run is stated.
- Signup
- Not stated.
- Watermark
- Not stated.
- Where files go
- Not stated. The privacy policy does not say where user text is processed or how long it is kept.
From the tool's own pages, checked 2026-11-01. Sources: Home page (pricing section), Privacy policy. Prices and limits change; check the tool before you rely on them.
Details and sources
- Free tier
- The free version corrects spelling, simple punctuation, and some style mistakes. The page says: “The free version corrects spelling as well as simple punctuation and some style mistakes.”
- Paid plan
- Premium plans are available, and there is a limited-time 20% discount. The page says: “20 % Limited-time discount on Premium!.”
- Signup
- Users can create a free account. The page says: “Create your free account.”
- Watermark
- Not stated.
- Where files go
- Not stated.
From the tool's own pages, checked 2026-11-08. Sources: Home. Prices and limits change; check the tool before you rely on them.
Read automatically by a program, not by a person. Each fact quotes the sentence it came from, and a fact is shown only if that sentence is on the page. Where a page did not say, it reads “Not stated.”
Answers come from each tool's own pages (“Unclear” means they do not say). Tick “Compare” on two to four tools to read them side by side.
Also listed (5, not yet tested)
Each of these answered when we visited its site. We have not tested them or recorded facts, so they are in alphabetical order, not ranked.
- LudwigOpen
Ludwig is listed for: grammar checker.
- ReversoOpen
Reverso is listed for: translator, grammar checker.
- ScribensOpen
Scribens is a free grammar checker that corrects a wide variety of mistakes, including conjugation, agreement, word confusion, punctuation, typography, and more.
- TrinkaOpen
Improve your writing and grammar with AI writing assistant! Trinka polishes your writing with AI editing & proofreading for clear, concise, & impactful communication. Try for FREE!
- WritefullOpen
Writefull is automated writing and proofreading for academics, using the most advanced AI to date
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