# TERA vs Grammar Checker AI

The clearest difference is in-app purchases: TERA at none against Grammar Checker AI's 8. Grammar Checker AI's advantage is update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Grammar Checker AI sells 8 in-app purchases, starting at $5.99 per 7 days. TERA asks for nothing beyond the download.

TERA ships an update monthly, Grammar Checker AI weekly. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | TERA | Grammar Checker AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (41 ratings)](https://appshunter.io/ios/app/grammar-checker-ai-grammar-plus/id6572300389/reviews)** |
| Number of ratings | — | **41** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 78 MB | 71 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Europea i Malmö AB](https://appshunter.io/developer/541908096) | [Aleksei Khaliapin](https://appshunter.io/developer/1739805597) |

## What reviewers say

### TERA

[App page](https://appshunter.io/ios/app/tera-touch/id1331933478)

**Features:** Vision Pro support

**In-app purchases:** none


### Grammar Checker AI

[App page](https://appshunter.io/ios/app/grammar-checker-ai-grammar-plus/id6572300389)

This AI-powered tool enhances your writing by detecting and correcting grammar, spelling, and punctuation errors. It offers real-time feedback and style suggestions to ensure your text is clear, correct, and compelling for any purpose.

**Highlights:** Real-time grammar and spell checking, AI-powered text correction, Sentence structure analysis, Punctuation and capitalization fixes, Style suggestions for clarity, Offline basic checks

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Weekly | $5.99 | per 7 days |
| Premium Access | $6.99 | per 7 days |
| Basic Monthly | $9.99 | per month |
| Premium Access | $9.99 | per month |
| Basic Annual Limited Offer | $29.99 | per year |
| Premium Access Special Offer | $29.99 | per year |
| Premium Access | $39.99 | per year |
| Basic Annual | $49.99 | per year |


## Frequently asked questions

### Is TERA free?

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

### Is Grammar Checker AI free?

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

### Do TERA or Grammar Checker AI have ads?

Neither TERA nor Grammar Checker AI shows ads.

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

TERA ships an update monthly, and Grammar Checker AI weekly. Most recently, TERA was updated on November 2, 2026 and Grammar Checker AI on November 4, 2026.

---

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