Comparison

Proofreader vs SynapX

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

Head to head
About

Proofreader

Enhance your writing with an AI-powered tool that detects and corrects grammar, spelling, and punctuation errors. Achieve clear, concise, and error-free communication for emails, reports, and essays. Supports multiple languages with a user-friendly interface.

Highlights
  • Advanced grammar and spelling check
  • AI-driven error correction
  • User-friendly interface
  • Multiple language support
  • Privacy and security focused
Features
Read full description

Are you tired of embarrassing typos, grammar blunders, or awkward sentences in your emails, reports, or essays? Say goodbye to writing mistakes with Proofreader, your trusted companion for flawless communication. Our AI-driven app elevates your writing to a professional level, making sure your message is clear, concise, and error-free. KEY FEATURES Advanced Grammar & Spelling Check Proofreader uses cutting-edge AI to detect and correct grammar, spelling, and punctuation errors in your text. From subject-verb agreement to comma usage, we make your writing as polished as it can be. Rewrite & Improve Clarity Instantly fix awkward sentences, weak vocabulary, and unclear phrasing so every sentence reads naturally. 30+ Languages Supported Whether you write in English or another language, Proofreader helps you achieve impeccable results. Simple, Fast, Intuitive A clean and easy interface — just paste your text and get a corrected version in seconds. Privacy First Your content is processed securely and we respect your privacy. Whether you are a student, teacher, professional, or writer, Proofreader is your solution for impeccable writing. Enhance your communication today and let your words shine with confidence! Privacy: https://proofreader.ardasen.com/privacy.html Terms: https://proofreader.ardasen.com/terms.html

About

SynapX

Features
Read full description

SynapX — AI Notes & Second Brain SynapX is an AI-powered note-taking app designed to help you capture thoughts, organize ideas, and retrieve what matters later. Use quick notes, voice capture, OCR import, Apple Notes sharing, private notes, reminders, search, and an AI assistant to build a personal knowledge system that stays useful over time. CAPTURE NOTES Create notes from text, voice, scanned documents, images, clipboard content, and shared Apple Notes. AI AUTO-ORGANIZATION SynapX can help clean up notes, generate titles and summaries, add tags, choose categories, detect action items, identify questions, and connect related notes. ASK YOUR NOTES Use the Ask feature to search your saved notes semantically, recall details, find connections, and propose edits or new notes for your approval. PRIVATE VAULT Mark sensitive notes as Private and keep them behind Face ID, Touch ID, or your device passcode. Private notes are not sent to AI. OCR IMPORT Scan documents or import images from Photos. Text recognition runs on device using Apple technologies. REMINDERS & CALENDAR Turn notes into scheduled items and view upcoming reminders in a calendar-style workflow. KNOWLEDGE INSIGHTS Review topic clusters, high-priority notes, related notes, temporary notes, and knowledge-health views to keep your second brain organized. LOCAL-FIRST NOTES Your notes are stored on your device. Account profile data is used for authentication and app functionality. PRIVACY FIRST - Sign in with Apple - Delete your account in the app - No ads - No third-party analytics or tracking SDKs - Private notes are never sent to AI AI DISCLAIMER SynapX uses automated AI features to organize and respond to your notes. AI output may be inaccurate, incomplete, or inappropriate. SynapX does not provide legal, medical, financial, therapeutic, or other professional advice. Always verify important information and consult a qualified professional where appropriate. SUBSCRIPTION DETAILS SynapX Premium is an auto-renewable subscription available as monthly and yearly plans. The price in your local currency is shown in the app before purchase. • Payment is charged to your Apple ID at confirmation of purchase • Subscription automatically renews unless canceled at least 24 hours before the end of the current period • Renewal is charged within 24 hours before the end of the current period • Manage or cancel your subscription in App Store account settings • Any Apple introductory offer terms, if available, are shown before purchase Privacy Policy: https://zephyranthess.github.io/SynapX/privacy_policy.html Terms of Use: https://zephyranthess.github.io/SynapX/terms_of_use.html

Screenshots

Proofreader4 screens
SynapX4 screens

Verdict

The call

The clearest difference is ads: SynapX at none against Proofreader's shown. SynapX also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (13.0 vs 15.0). On price, 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. Proofreader sells 2 in-app purchases, starting at $9.99 per month and SynapX sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Proofreader ships an update every 3 months, SynapX every 4 days. Both last shipped on October 24, 2026.

Scorecard3 real differences · 6 level
Proofreader versus SynapX: the parameters behind the verdict, then further details
ParameterProofreaderSynapX
PriceFreeFree
Rating4.3 (20 ratings) — better—
Number of ratings20 — better—
Update frequencyEvery 3 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.013.0 — better
Further details — not scored
Size7 MB30 MB
Age rating4+9+
DeveloperArda SenYASIN OZALP

In-app purchases

2 purchases

Proofreader

Subscriptions2
  • Monthly Subscription$9.991 Month
  • Yearly Subscription3 Days trial$29.991 Year
2 purchases

SynapX

Subscriptions2
  • SynapX Premium Monthly$9.991 Month
  • SynapX Pro Yearly$79.991 Year

Questions

Is Proofreader free?
Proofreader is free to download, with in-app purchases available.
Is SynapX free?
SynapX is free to download, with in-app purchases available.
Do Proofreader or SynapX have ads?
Proofreader shows ads; SynapX does not.
Which is updated more often, Proofreader or SynapX?
Proofreader ships an update every 3 months, and SynapX every 4 days. Most recently, Proofreader was updated on October 24, 2026 and SynapX on October 24, 2026.

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