# Grammar Check vs Priority4

The clearest difference is in-app purchases: Priority4 at none against Grammar Check's 4. Priority4 also leads on ads (none vs shown). Grammar Check's advantage is update cadence (every 8 days vs every 12 months) and iOS requirement (17.6 vs 26.0). On price and device support there is nothing between them.

Both are free to download. Grammar Check sells 4 in-app purchases, starting at $3.99 per 7 days. Priority4 asks for nothing beyond the download.

Grammar Check ships an update every 8 days, Priority4 every 12 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Grammar Check | Priority4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (448 ratings)](https://appshunter.io/ios/app/grammar-check-spell-corrector/id6444564469/reviews)** | — |
| Number of ratings | **448** | — |
| Positive reviews | 86.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 18 MB |
| Requires iOS | **17.6** | 26.0 |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [talha rehman](https://appshunter.io/developer/1573036144) | [Marco Reyes](https://appshunter.io/developer/1708404834) |

## What reviewers say

### Grammar Check

[App page](https://appshunter.io/ios/app/grammar-check-spell-corrector/id6444564469)

This AI-powered tool goes beyond basic spelling and punctuation to correct grammar, enhance clarity, and improve sentence structure. It supports file uploads for large documents and offers unlimited checks with a history tracking feature for easy review.

**Highlights:** Comprehensive grammar and tense checks, Enhances content clarity and flow, File upload for large documents, Unlimited word count for checks, Track grammar check history, Deep comparison of errors

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grammar Premium - Weekly | $3.99 | per 7 days |
| Grammar Premium - Monthly | $6.99 | per month |
| Special Discount - Yearly | $19.99 | per year |
| Grammar Premium - Yearly | $29.99 | per year |

**What reviewers like**

- 👍 Great tool for grammar checking
- 🚀 Quick and efficient
- 👍 Useful for writing career
- 👍 Helpful for learning disabilities
- 👍 Works well

**What reviewers complain about**

- 🐛 Tutorials not in chosen language
- 🐛 Korean language support removed
- 🐛 Translation glitches
- 🐛 Unlimited word count misleading
- 🐛 Ads appear frequently even after subscription

**Reported bugs**

- Connection issues
- Translation glitches
- Words in red are the same as original text
- Ads appear frequently after subscription
- Notification message not localized

**Requested features**

- Fix tutorial language localization
- Bring back Korean language support
- Add multi-language switch in settings
- Add Dark Mode for keyboard
- Add 'remove ads' benefit for premium members


### Priority4

[App page](https://appshunter.io/ios/app/priority4/id6503363594)

**In-app purchases:** none


## Frequently asked questions

### Is Grammar Check free?

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

### Is Priority4 free?

Priority4 is free to download, with no in-app purchases.

### Do Grammar Check or Priority4 have ads?

Grammar Check shows ads; Priority4 does not.

### Which is updated more often, Grammar Check or Priority4?

Grammar Check ships an update every 8 days, and Priority4 every 12 months. Most recently, Grammar Check was updated on October 27, 2026 and Priority4 on October 24, 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.*