# Cây Study vs OpenQuiz AI

The clearest difference is review sentiment: Cây Study at 96% against OpenQuiz AI's 44%. Cây Study also leads on ads (none vs shown) and rating (5.0 vs 4.7). OpenQuiz AI's advantage is ratings volume (77 vs 1) and update cadence (every 3 days vs every 2 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Cây Study sells 10 one-off in-app purchases and OpenQuiz AI sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Cây Study holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: OpenQuiz AI has 77 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 96% of Cây Study's written reviews are positive against 44% of OpenQuiz AI's.

Cây Study ships an update every 2 weeks, OpenQuiz AI every 3 days. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Cây Study | OpenQuiz AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cay-study/id6458733106/reviews)** | [4.7 (77 ratings)](https://appshunter.io/ios/app/openquiz-ai/id6767530658/reviews) |
| Number of ratings | 1 | **77** |
| Positive reviews | **96.1% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 37 MB | 39 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [EDMICRO EDUCATION COMPANY LIMITED](https://appshunter.io/developer/1506873009) | [OPENQUIZ COMPANY LIMITED](https://appshunter.io/developer/1788450132) |

## What reviewers say

### Cây Study

[App page](https://appshunter.io/ios/app/cay-study/id6458733106)

This language learning app focuses on pronunciation, offering AI-powered feedback on tone and intonation. It includes over 1000 vocabulary and grammar exercises, plus 100 practice tests with detailed explanations. Personalized course packages cater to individual learning needs.

**Highlights:** Native-like pronunciation training, AI-powered tone and intonation analysis, 1000+ vocabulary and grammar exercises, 100+ practice tests, Personalized course packages, AI scoring and answer analysis

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Khóa từ vựng TOEIC 450-700 | $2.99 | one-time |
| Từ vựng TOEIC 0-450 | $2.99 | one-time |
| Khóa từ vựng TOEIC 700+ | $2.99 | one-time |
| Phát âm tiếng anh | $2.99 | one-time |
| 3000 từ vựng tiếng anh | $4.99 | one-time |
| Từ vựng IELTS Ban0-4.5 | $6.99 | one-time |
| Bộ 20 đề IELTS thi online | $6.99 | one-time |
| Từ vựng IELTS Band 4.5-5.5 | $7.99 | one-time |
| Từ vựng IELTS Band 6.5+ | $9.99 | one-time |
| Từ vựng IELTS Band 5.5-6.5 | $9.99 | one-time |


### OpenQuiz AI

[App page](https://appshunter.io/ios/app/openquiz-ai/id6767530658)

This AI-powered language learning tool helps users master vocabulary and speaking skills. It offers flashcard creation, spaced repetition, grammar practice, and realistic AI conversations for pronunciation feedback and fluency building. Supports over 50 languages for various learning goals.

**Highlights:** AI-powered language learning, Flashcard creation from photos/text, Spaced repetition review, AI conversation practice, Pronunciation feedback, Personalized learning paths

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenQuiz Premium | $9.99 | per month |
| OpenQuiz Premium | $19.99 | per 3 months |
| OpenQuiz Premium | $39.99 | per year |


## Frequently asked questions

### Is Cây Study free?

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

### Is OpenQuiz AI free?

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

### Which has better reviews, Cây Study or OpenQuiz AI?

Cây Study is rated higher. Cây Study averages 5.0 out of 5 from 1 ratings, while OpenQuiz AI averages 4.7 from 77 ratings.

### Do Cây Study or OpenQuiz AI have ads?

OpenQuiz AI shows ads; Cây Study does not.

### Which is updated more often, Cây Study or OpenQuiz AI?

Cây Study ships an update every 2 weeks, and OpenQuiz AI every 3 days. Most recently, Cây Study was updated on October 15, 2026 and OpenQuiz AI on October 17, 2026.

---

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