Comparison

Grammarly vs CoParentSync

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

Head to head
About

Grammarly

Enhance your writing with real-time AI-powered suggestions for spelling, grammar, and clarity. This tool works seamlessly across your apps, offering voice dictation and generative AI rewrites to polish your messages and documents.

Highlights
  • Real-time spelling and grammar checks
  • AI-powered writing suggestions
  • Voice dictation with automatic cleanup
  • Generative AI rewrites
  • Tone detection and transformation
  • Document editor with plagiarism detection
Features
Read full description

Instantly and easily create smart, polished writing with the Grammarly Keyboard. Designed to deliver real-time writing feedback and provide AI assistance, the Grammarly Keyboard works directly in your iPhone and iPad apps, no copy and paste required. When you join the millions of people using the Grammarly Keyboard, you'll benefit from: An easy-to-use AI keyboard that works in all your apps - Spelling, grammar, and conciseness suggestions in 20+ languages - Typing in 6 languages - Voice dictation with automatic cleanup - Vocabulary and clarity recommendations (Premium only) - Tone detection - Tone transformations (Premium only) - Multi-word text predictions - Smart autocorrect, synonyms, and swipe typing - Emoji predictions and search bar Generative AI rewrites - New versions of your entire message in a couple of taps - Versions adjust for length, fluency, tone, and more - Rewrites are supported in 20+ languages - Works in all your favorite apps Voice dictation finally done right - Fast and accurate, perfect for polished replies on the go - Automatically removes filler words and fixes grammar - Keep your tone intact - Works with a broad range of languages, accents, and speaking paces - Allows for further editing and refinement - Audio is never stored—it’s gone the moment you’re done A document editor for long-form writing and notes - Comprehensive writing feedback - Cloud-based document management - Personal writing statistics - Plagiarism and AI detection - Compatible with hardware keyboards Further improve your writing with Grammarly Premium Grammarly Premium makes your writing more engaging and effective with advanced suggestions for clarity, conciseness, tone, and vocabulary. Premium works across all your devices. If you upgrade to a Premium subscription, payments will be charged to the account associated with your Apple ID. Your subscription will automatically renew unless you cancel at least 24 hours before the end of the current period. After purchase, you can manage your subscription by going to your account settings in the App Store. Privacy is our priority Grammarly practices privacy by design. Your words are your own; we will never rent or sell your data. User Trust Guidelines: https://www.grammarly.com/trust Terms of Service: https://www.grammarly.com/terms Privacy Policy: https://www.grammarly.com/privacy-policy California Privacy Notice: https://www.grammarly.com/privacy-policy#for-california-users

About

CoParentSync

Features
Read full description

CoParentSync helps separated, divorced, or co-parenting families stay organized in one simple place. Designed for busy parents managing shared schedules and family responsibilities, CoParentSync makes it easier to keep track of parenting time, appointments, school events, activities, reminders, and important notes. With CoParentSync, families can organize day-to-day parenting details without relying on scattered texts, paper notes, or memory alone. Features may include: Shared parenting schedule organization Calendar and event tracking Notes for important family details Reminders for appointments, exchanges, school events, and activities A simple, family-friendly layout designed for everyday use CoParentSync is intended to support better organization and reduce confusion around shared parenting responsibilities. It is not a legal, court, mediation, or emergency communication service.

Screenshots

Grammarly4 screens
CoParentSync4 screens

Verdict

The call

The clearest difference is chart position: Grammarly at #12 against CoParentSync's unranked. Grammarly also leads on iOS requirement (17.4 vs 26.1). On price, update cadence, ads and in-app purchases 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. Grammarly sells 9 in-app purchases, starting at $17.99 per month and CoParentSync sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Grammarly ships an update weekly, CoParentSync every 10 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 9 level
Grammarly versus CoParentSync: the parameters behind the verdict, then further details
ParameterGrammarlyCoParentSync
PriceFreeFree
Rating4.7 (228K ratings) — better—
Positive reviews69.6% of reviews—
Number of ratings228K — better—
Update frequencyWeekly — betterEvery 10 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
Best chart rank#12 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.4 — better26.1
Further details — not scored
Size347 MB12 MB
Age rating12+4+
DeveloperSuperhuman Platform IncHeartPathHoldings LLC

Bugs and requests

Grammarly

Reported bugs

4 issues
  • Keyboard lags and freezes
  • Incorrect capitalization and spacing
  • Inconsistent handling of special characters
  • Syncing issues between devices

Requested features

5 requests
  • Customizable personal dictionary
  • Improved punctuation handling
  • Swipe-to-type functionality
  • Student/education discounts
  • Separate 'reply' mode for existing text

CoParentSync

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Grammarly

Subscriptions9
  • Monthly Plan Mobile Only$17.991 Month
  • Monthly Plan Mobile Only7 Days trial$17.991 Month
  • Monthly Plan2 variants$29.991 Month
Show 6 more
  • Monthly Plan7 Days trial$29.991 Month
  • Quarterly Plan$59.993 Months
  • Quarterly Plan7 Days trial$59.993 Months
  • Annual Plan Mobile Only7 Days trial$83.991 Year
  • Annual Plan7 Days trial$139.991 Year
  • Annual Plan$139.991 Year
2 purchases

CoParentSync

Subscriptions2
  • CoParentSync Monthly7 Days trial$12.991 Month
  • CoParentSync Annual7 Days trial$109.001 Year

Questions

Is Grammarly free?
Grammarly is free to download, with in-app purchases available.
Is CoParentSync free?
CoParentSync is free to download, with in-app purchases available.
Do Grammarly or CoParentSync have ads?
Neither Grammarly nor CoParentSync shows ads.
Which is updated more often, Grammarly or CoParentSync?
Grammarly ships an update weekly, and CoParentSync every 10 days. Most recently, Grammarly was updated on November 5, 2026 and CoParentSync on October 31, 2026.

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