# Full Score Grammar vs Grammar AI Checker

The clearest difference is update cadence: Grammar AI Checker at every 5 days against Full Score Grammar's monthly. Full Score Grammar's advantage is iOS requirement (12.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Full Score Grammar sells 4 one-off in-app purchases and Grammar AI Checker sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Full Score Grammar ships an update monthly, Grammar AI Checker every 5 days. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Full Score Grammar | Grammar AI Checker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 5 days** |
| Size | 30 MB | 16 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [绍权 刘](https://appshunter.io/developer/1774060504) | [Muhammad Zubair](https://appshunter.io/developer/1802731328) |

## What reviewers say

### Full Score Grammar

[App page](https://appshunter.io/ios/app/full-score-grammar/id6739614903)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员 | $1.99 | one-time |
| One Month VIP | $3.99 | one-time |
| One Year VIP | $14.99 | one-time |
| Lifetime VIP | $24.99 | one-time |


### Grammar AI Checker

[App page](https://appshunter.io/ios/app/grammar-ai-checker-correctify/id6745131479)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Grammar Checker Weekly | $4.99 | per 7 days |
| AI Grammar Checker Monthly | $6.99 | per month |
| AI Grammar Checker Yearly | $19.99 | per year |


## Frequently asked questions

### Is Full Score Grammar free?

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

### Is Grammar AI Checker free?

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

### Do Full Score Grammar or Grammar AI Checker have ads?

Neither Full Score Grammar nor Grammar AI Checker shows ads.

### Which is updated more often, Full Score Grammar or Grammar AI Checker?

Full Score Grammar ships an update monthly, and Grammar AI Checker every 5 days. Most recently, Full Score Grammar was updated on October 30, 2026 and Grammar AI Checker on November 8, 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.*