# Khmer Knowledge vs Chinese GrammarーLessons・Tests

The clearest difference is in-app purchases: Khmer Knowledge at none against Chinese GrammarーLessons・Tests's 3. Khmer Knowledge also leads on ads (none vs shown) and update cadence (every 3 months vs every 19 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Chinese GrammarーLessons・Tests sells 3 in-app purchases, starting at $7.99 per month. Khmer Knowledge asks for nothing beyond the download.

Khmer Knowledge ships an update every 3 months, Chinese GrammarーLessons・Tests every 19 months. The most recent releases landed on October 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Khmer Knowledge | Chinese GrammarーLessons・Tests |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (13 ratings)](https://appshunter.io/ios/app/chinese-grammarlessonstests/id1626008575/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 19 months |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 91 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Socheat Leng](https://appshunter.io/developer/1528841743) | [PORO Studio](https://appshunter.io/developer/1547910644) |

## What reviewers say

### Khmer Knowledge

[App page](https://appshunter.io/ios/app/khmer-knowledge/id1488126790)

**In-app purchases:** none


### Chinese GrammarーLessons・Tests

[App page](https://appshunter.io/ios/app/chinese-grammarlessonstests/id1626008575)

Master Chinese grammar with comprehensive lessons, real-life examples, and practice tests. Learn step-by-step or by topic, with unique tips to distinguish similar grammar points and improve speaking and writing skills.

**Highlights:** 163+ detailed grammar points, Real-life examples and explanations, Practice tests and interactive quizzes, Diversified games for practice, Timed quizzes for speed, Review with answer explanations, Categorized lessons by level and topic

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $7.99 | per month |
| Annual | $59.99 | per year |
| Lifetime Package | $79.99 | one-time |


## Frequently asked questions

### Is Khmer Knowledge free?

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

### Is Chinese GrammarーLessons・Tests free?

Chinese GrammarーLessons・Tests is free to download, with in-app purchases available.

### Do Khmer Knowledge or Chinese GrammarーLessons・Tests have ads?

Chinese GrammarーLessons・Tests shows ads; Khmer Knowledge does not.

### Which is updated more often, Khmer Knowledge or Chinese GrammarーLessons・Tests?

Khmer Knowledge ships an update every 3 months, and Chinese GrammarーLessons・Tests every 19 months. Most recently, Khmer Knowledge was updated on October 1, 2026 and Chinese GrammarーLessons・Tests 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.*