Comparison

Line vs Proofreader AI Grammar Checker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Line

Transform any photo or graphic into a line drawing with this efficient tool. Ideal for artists, it offers easy tracing, direct printing, and cloud saving. Now free for all users, it supports multiple images and layers for complex artwork.

Highlights
  • Image to line drawing conversion
  • Supports multiple images
  • Layer support
  • Adjustable line levels
  • Tracing mode with disabled touches
  • Light table functionality
  • Print and cloud save options
Features
Read full description

Line-ize will take any photo, image, or graphic and convert it to a line drawing. It's lightweight so you can get your art transferred to lines easily and quickly. It allows for easy tracing, send directly to a printer, or save/upload to the cloud. *** NOW FREE FOR EVERYONE *** Created by tattoo/piercing industry professionals for industry professionals. *** Ideal for tattooists, comic book artists, marketing and graphic artists and more! *** -- FEATURES -- - Now supporting iPhones!! - Supports multiple images at once - Layers support for combining artwork together - 5 levels of adjustments to get the lines exactly how you need - Disables touches for easy tracing with a pencil or pen right on your iPad - Right or Left handed artists feature - Acts as a light table too! - Portrait and landscape

About

Proofreader AI Grammar Checker

Enhance your writing with a comprehensive grammar checker and AI assistant. Improve clarity, rewrite sentences, detect AI-generated text, and access a translator and dictionary. Works seamlessly across all your typing applications.

Highlights
  • Grammar, spelling, and punctuation correction
  • Sentence rewriting and tone adjustment
  • AI-generated text detection
  • Clipboard for saving and reusing text
  • Translator for over 100 languages
  • Writing insights and style suggestions
Features
Read full description

Proofreader: Say What You Mean. Without The Mistakes. Trusted by +1,000,000 people globally. Write clearly and confidently with Proofreader, a grammar checker and writing assistant that works everywhere you type. Fix grammar, improve clarity, rewrite awkward sentences, and detect AI-generated text — without losing your voice. A keyboard that works your way Proofread, rewrite, and create text across apps with the Proofreader keyboard. Clear controls and a fresh design keep your writing tools close: • Proofread to review and apply grammar, spelling, and punctuation corrections. • Rewrite to adjust your tone or rephrase a sentence. Move your favourite styles to the front. • Create to draft emails, messages, and more from a simple prompt. Customise your keyboard with an optional number row, period key and shortcuts, key previews, and emoji skin tones. Save and reuse text Keep replies, addresses, links, and other text you use often in Clipboard. Save and manage clips in the app or keyboard, then tap a clip to paste it while you write. Write better in seconds Check grammar, spelling, punctuation, sentence structure, and readability. Review corrections and clear explanations that help you improve your writing over time. Check and improve writing in English, Spanish, French, German, Portuguese, and more. Rewrite without changing your voice Proofreader's rewrite and paraphrasing tools help you reword text naturally while preserving your meaning. Refine the tone, improve clarity, or find another way to express your ideas. Rewrite messages, emails, essays, captions, and documents in different styles and lengths: • Polish • Formal • Casual • Confident • Engaging • Academic • Empathetic • Creative • Humorous • Shorten • Expand Easy help for proper writing Whether you're a native speaker or still learning, Proofreader helps you correct grammar, improve sentence structure, expand your vocabulary, and understand corrections. Choose from multiple English dialects: American, British, Australian, Canadian, New Zealand, or South African. Writing insights Get a clear report on how your writing reads beyond individual corrections. See clarity, tone, readability, word and sentence counts, reading and speaking time, sentence length, and word variety. Detect AI-generated text Not sure if a piece of writing sounds too robotic? Proofreader's AI Detector analyzes your text and tells you how likely it is to be AI-generated, highlighting the passages that read as machine-written. Use the AI Detector to: • Check whether text reads as human or AI • See a clear human / review / AI verdict • Spot and highlight AI-sounding passages • Edit flagged text to sound more natural and authentic More tools in the app • Translator for 100+ languages • Dictionary and definitions • Contextual vocabulary suggestions • Text reader to hear your writing aloud • Writing explanations and style suggestions Privacy-first by design Your writing stays private. Writing tools process the text you submit to provide corrections, rewrites, and other results. Clipboard clips you choose to save are stored on your device. You can edit or delete them in the app or keyboard. Try Proofreader Pro Get advanced writing tools, including: • Unlimited rewriting • AI text generation • Advanced writing styles • Vocabulary enhancements • Pro grammar corrections • Professional writing tools • AI Detection Licensed Application end User License Agreement (EULA): https://www.apple.com/legal/itunes/dev/stdeula/ Start your free trial today and experience faster, clearer, and more confident writing.

Screenshots

Line4 screens
Proofreader AI Grammar Checker4 screens

Verdict

The call

The clearest difference is rating: Proofreader AI Grammar Checker at 4.7 against Line's 3.3. Proofreader AI Grammar Checker also leads on review sentiment (65% vs 33%) and update cadence (every 3 weeks vs every 4 months). Line's advantage is monetization model (free vs freemium) and iOS requirement (14.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Line sells 1 one-off in-app purchase and Proofreader AI Grammar Checker sells 8 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Proofreader AI Grammar Checker holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Proofreader AI Grammar Checker has 3.3K ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 33% of Line's written reviews are positive against 65% of Proofreader AI Grammar Checker's.

UpkeepUpdate frequency

Line ships an update every 4 months, Proofreader AI Grammar Checker every 3 weeks. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard6 real differences · 4 level
Line versus Proofreader AI Grammar Checker: the parameters behind the verdict, then further details
ParameterLineProofreader AI Grammar Checker
PriceFreeFree
Rating3.3 (8 ratings)4.7 (3.3K ratings) — better
Positive reviews33.3% of reviews64.7% of reviews — better
Number of ratings83.3K — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better16.6
Further details — not scored
Size4 MB60 MB
Age rating4+4+
Developerkevin greenBlueSoar SL

Customer experience

Line

All ratings8 ratings
Positive62.5%
Neutral0.0%
Negative37.5%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

Proofreader AI Grammar Checker

All ratings3,284 ratings
Positive92.6%
Neutral2.9%
Negative4.4%
Written reviews139 reviews
Positive64.7%
Neutral9.4%
Negative25.9%

Bugs and requests

Line

Not enough reviews yet to summarise bugs or requests.

Proofreader AI Grammar Checker

Reported bugs

4 issues
  • Difficulty cancelling subscriptions
  • Unexpected charges during free trials
  • App crashes or freezes
  • Incorrect grammar/spelling corrections

Requested features

5 requests
  • Keyboard integration for easier use
  • More customization options
  • Improved accuracy and consistency
  • Desktop/browser extension version
  • Better handling of creative/informal writing styles

In-app purchases

1 purchases

Line

One-time1
  • Remove Ads$4.99
8 purchases

Proofreader AI Grammar Checker

Subscriptions8
  • Proofreader Pro7 Days trial$4.991 Month
  • Proofreader Pro7 Days trial2 variants$9.991 Month
  • Monthly Plan7 Days trial$9.991 Month
Show 5 more
  • Proofreader Pro7 Days trial$13.493 Months
  • Proofreader Pro7 Days trial$24.993 Months
  • Proofreader Pro7 Days trial$39.991 Year
  • Proofreader Pro7 Days trial2 variants$47.991 Year
  • Proofreader Pro7 Days trial$49.991 Year

Questions

Is Line free?
Line is free to download, with in-app purchases available.
Is Proofreader AI Grammar Checker free?
Proofreader AI Grammar Checker is free to download, with in-app purchases available.
Which has better reviews, Line or Proofreader AI Grammar Checker?
Proofreader AI Grammar Checker is rated higher. Line averages 3.3 out of 5 from 8 ratings, while Proofreader AI Grammar Checker averages 4.7 from 3.3K ratings.
Do Line or Proofreader AI Grammar Checker have ads?
Neither Line nor Proofreader AI Grammar Checker shows ads.
Which is updated more often, Line or Proofreader AI Grammar Checker?
Line ships an update every 4 months, and Proofreader AI Grammar Checker every 3 weeks. Most recently, Line was updated on November 3, 2026 and Proofreader AI Grammar Checker on November 7, 2026.

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