Proofreader AI Grammar Checker vs Synchrono
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Synchrono
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Synchrono is your personal morning co-host — turning email chaos and podcast backlogs into one short, spoken daily digest. Why Synchrono? - Most tools are siloed: email-only, newsletter-only, or podcast summaries only. They often force forwarding emails or manual RSS setup. Synchrono does it differently: Direct inbox access (secure OAuth to Gmail/Outlook — no proxy or forwarding) - Proactive inbox scanning — spots spam, promos & noise, suggests blocks (you control everything: relaxed/strict modes, block by email/domain/subject — nothing is ever deleted or changed automatically) - Unified audio digests — emails, newsletters & podcasts (RSS + YouTube links) in one 8–10 min listen Emotional, natural narration — powered by premium voices that sound like a real co-host (warm, casual, engaging) How it works Connect your inbox and favourite podcasts once. Synchrono scans your real inbox, suggests filters to keep it focused, then delivers a single daily audio summary — morning and afternoon options. No more guilt from unread messages or unlistened episodes.Perfect for Busy professionals, creators, podcast addicts, and anyone tired of info overload. Reclaim your time. Stay informed. Feel calm.
Screenshots
Verdict
The clearest difference is update cadence: Synchrono at every 2 days against Proofreader AI Grammar Checker's every 3 weeks. 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
Both are free to download. Proofreader AI Grammar Checker sells 8 in-app purchases, starting at $4.99 per month and Synchrono sells 1 in-app purchase, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.
Proofreader AI Grammar Checker ships an update every 3 weeks, Synchrono every 2 days. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Proofreader AI Grammar Checker | Synchrono |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (3.3K ratings) — better | — |
| Positive reviews | 64.7% of reviews | — |
| Number of ratings | 3.3K — better | — |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 60 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | BlueSoar SL | Ibrahim musa |
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
Synchrono
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Proofreader AI Grammar Checker
- Proofreader Pro7 Days trial$4.991 Month
- Proofreader Pro7 Days trial2 variants$9.991 Month
- Monthly Plan7 Days trial$9.991 Month
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- 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
Synchrono
- Synchrono Basic3 Days trial$14.991 Month
Questions
Is Proofreader AI Grammar Checker free?
Is Synchrono free?
Do Proofreader AI Grammar Checker or Synchrono have ads?
Which is updated more often, Proofreader AI Grammar Checker or Synchrono?
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