# Grammarly vs CoParentSync

The clearest difference is chart position: Grammarly at #11 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.

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.

Grammarly ships an update weekly, CoParentSync every 10 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Grammarly | CoParentSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (228K ratings)](https://appshunter.io/ios/app/grammarly-ai-keyboard-and-voice/id1158877342/reviews)** | — |
| Number of ratings | **228K** | — |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Freemium | — |
| Best chart rank | **#11** | — |
| Size | 347 MB | 12 MB |
| Requires iOS | **17.4** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Superhuman Platform Inc](https://appshunter.io/developer/1134927945) | [HeartPathHoldings LLC](https://appshunter.io/developer/1853746005) |

## What reviewers say

### Grammarly

[App page](https://appshunter.io/ios/app/grammarly-ai-keyboard-and-voice/id1158877342)

**Currently charting:** #11 Top Grossing · Productivity, #45 Top Free · Productivity, #172 Top Grossing (US App Store)

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:** Safari Extension, iMessage stickers, Vision Pro support, Fun Camera support, iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan Mobile Only | $17.99 | per month |
| Monthly Plan Mobile Only | $17.99 | per month |
| Monthly Plan | $29.99 | per month |
| Monthly Plan | $29.99 | per month |
| Quarterly Plan | $59.99 | per 3 months |
| Quarterly Plan | $59.99 | per 3 months |
| Annual Plan Mobile Only | $83.99 | per year |
| Annual Plan | $139.99 | per year |
| Annual Plan | $139.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 🚀 Extremely useful
- 👍 Helps improve writing skills
- 👍 Provides useful suggestions
- 👍 Beneficial for non-native speakers

**What reviewers complain about**

- 🐛 Buggy keyboard behavior
- 🐛 Inconsistent performance across platforms
- 🔒 Privacy concerns with 'full access' requirement
- 💰 Expensive premium subscription
- 🤔 Overzealous correction suggestions

**Reported bugs**

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

**Requested features**

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


### CoParentSync

[App page](https://appshunter.io/ios/app/coparentsync/id6785614542)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CoParentSync Monthly | $12.99 | per month |
| CoParentSync Annual | $109.00 | per year |


## Frequently asked 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 6, 2026 and CoParentSync on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*