# Grammarly vs CortexonQuant Spaces

The clearest difference is update cadence: Grammarly at weekly against CortexonQuant Spaces's every 2 weeks. Grammarly also leads on chart position (#12 vs unranked). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Grammarly sells 9 in-app purchases, starting at $17.99 per month and CortexonQuant Spaces sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Grammarly ships an update weekly, CortexonQuant Spaces every 2 weeks. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Grammarly | CortexonQuant Spaces |
| --- | --- | --- |
| 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 2 weeks |
| Monetization | Freemium | — |
| Best chart rank | **#12** | — |
| Size | 347 MB | 117 MB |
| Requires iOS | 17.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Superhuman Platform Inc](https://appshunter.io/developer/1134927945) | [CortexonQuant Labs Pty Ltd](https://appshunter.io/developer/1896332846) |

## What reviewers say

### Grammarly

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

**Currently charting:** #12 Top Grossing · Productivity, #48 Top Free · Productivity, #179 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


### CortexonQuant Spaces

[App page](https://appshunter.io/ios/app/cortexonquant-spaces/id6761678123)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spaces Pro Monthly | $5.99 | per month |
| Spaces Pro Yearly | $44.99 | per year |


## Frequently asked questions

### Is Grammarly free?

Grammarly is free to download, with in-app purchases available.

### Is CortexonQuant Spaces free?

CortexonQuant Spaces is free to download, with in-app purchases available.

### Do Grammarly or CortexonQuant Spaces have ads?

Neither Grammarly nor CortexonQuant Spaces shows ads.

### Which is updated more often, Grammarly or CortexonQuant Spaces?

Grammarly ships an update weekly, and CortexonQuant Spaces every 2 weeks. Most recently, Grammarly was updated on November 5, 2026 and CortexonQuant Spaces on October 25, 2026.

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