Comparison

Proofreader AI Grammar Checker vs Control Stack

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

Head to head
About

Proofreader AI Grammar Checker

Enhance your writing with an AI-powered keyboard and assistant. Correct grammar, spelling, and punctuation, and improve clarity and style. Generate text, rewrite sentences, and expand your vocabulary anywhere you type.

Highlights
  • AI Keyboard with one-tap proofreading
  • Advanced grammar, spelling, and punctuation checker
  • AI rewriting and paraphrasing
  • Text generation and vocabulary enhancement
  • Style and clarity improvements
  • Translator and dictionary
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.

About

Control Stack

Features
Read full description

Know exactly where you stand before your next audit. No guesswork, no last-minute surprises. Browse 1,423 cyber security controls in plain English, free and with no account. Control Stack is an Australian made compliance app that cross maps four frameworks so you can see how they connect: - ISO/IEC 27001 (information security management) - ASD Essential Eight, including the maturity model - ASD Information Security Manual (ISM) - ISO/IEC 42001 (AI management systems) BROWSE THE FULL LIBRARY, FREE AND NO ACCOUNT NEEDED Open the app and start reading straight away. Every control is explained in plain English and organised so you can find what you need fast. - 1,300+ controls, cross mapped across all four frameworks - Written to be clear, not buried in jargon - Handy on the job when you need control detail quick and easy OPTIONAL TRACKER: TURN READING INTO READINESS Create a free account when you want to track progress and walk into an audit knowing your numbers. The tracker is optional. The library stays free without it. - Dashboard: mark each control implemented, in progress or not started - Completion percentage for each framework, so you see progress at a glance - Remediation tasks with due dates, so you know what is overdue or due soon - Audit countdown: set a target date and track the days remaining - Needs attention: surfaces the framework you are most behind on - Progress syncs across your devices - Sign in with Google, Apple, email and password, or a magic link WHO IT IS FOR - Security and GRC professionals managing ISO 27001 or ISM programs - IT teams working through the Essential Eight maturity model - Organisations starting out with ISO 42001 for AI management - Anyone who wants control detail in plain English, fast WHY CONTROL STACK Compliance is stressful when you cannot see the whole picture. Control Stack puts the reference and the tracking in one place, so audit day feels like a review of work you already know is done, not a scramble. ABOUT Control Stack is an independent, Australian made reference and tracking tool. It does not certify compliance and does not guarantee you will pass an audit. It is not affiliated with, endorsed by, or associated with ISO, the ACSC, the ASD, Apple, or Google. All framework names and trademarks belong to their respective owners.

Screenshots

Proofreader AI Grammar Checker4 screens
Control Stack4 screens

Verdict

The call

The clearest difference is in-app purchases: Control Stack at none against Proofreader AI Grammar Checker's 11. On price, update cadence, ads 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. Proofreader AI Grammar Checker sells 8 in-app purchases, starting at $4.99 per month. Control Stack asks for nothing beyond the download.

UpkeepUpdate frequency

Proofreader AI Grammar Checker ships an update fortnightly, Control Stack every 3 weeks. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 9 level
Proofreader AI Grammar Checker versus Control Stack: the parameters behind the verdict, then further details
ParameterProofreader AI Grammar CheckerControl Stack
PriceFreeFree
Rating4.7 (3.3K ratings) — better—
Positive reviews64.7% of reviews—
Number of ratings3.3K — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size59 MB22 MB
Age rating4+4+
DeveloperBlueSoar SLMindset Cyber

Bugs and 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

Control Stack

Not enough reviews yet to summarise bugs or requests.

In-app purchases

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 trial2 variants$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
None

Control Stack

No in-app purchases

Questions

Is Proofreader AI Grammar Checker free?
Proofreader AI Grammar Checker is free to download, with in-app purchases available.
Is Control Stack free?
Control Stack is free to download, with no in-app purchases.
Do Proofreader AI Grammar Checker or Control Stack have ads?
Neither Proofreader AI Grammar Checker nor Control Stack shows ads.
Which is updated more often, Proofreader AI Grammar Checker or Control Stack?
Proofreader AI Grammar Checker ships an update fortnightly, and Control Stack every 3 weeks. Most recently, Proofreader AI Grammar Checker was updated on October 13, 2026 and Control Stack on October 11, 2026.

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