# Math.Brain vs HSK CERT

The clearest difference is review sentiment: HSK CERT at 96% against Math.Brain's 50%. HSK CERT also leads on ads (none vs shown). Math.Brain's advantage is rating (4.8 vs 4.2) and ratings volume (90 vs 17). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Math.Brain sells 4 in-app purchases, starting at $12.99 per 7 days and HSK CERT sells 7 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Math.Brain holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Math.Brain has 90 ratings behind it against 17, so its average is the more settled of the two. Written reviews complicate that: 50% of Math.Brain's written reviews are positive against 96% of HSK CERT's, so the app with the better star average is not the one people write more warmly about.

Math.Brain ships an update every 8 days, HSK CERT fortnightly. The most recent releases landed on November 5, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Math.Brain | HSK CERT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (90 ratings)](https://appshunter.io/ios/app/mathbrain-ai-homework-helper/id6744367490/reviews)** | [4.2 (17 ratings)](https://appshunter.io/ios/app/hsk-cert-learn-chinese/id6746539268/reviews) |
| Number of ratings | **90** | 17 |
| Positive reviews | 50.0% of reviews | **96.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | Free with in-app purchases | Freemium |
| Size | 33 MB | 133 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [COMPREHENSIVE SOLUTIONS FOR DIGITAL MARKETING AND SOFTWARE DEVELOPMENT LIMITED](https://appshunter.io/developer/6776636491) | [International Chinese Learning &Testing Technology Co.,Limited](https://appshunter.io/developer/1806911287) |

## What reviewers say

### Math.Brain

[App page](https://appshunter.io/ios/app/mathbrain-ai-homework-helper/id6744367490)

This AI-powered tool simplifies complex subjects like algebra and geometry with step-by-step explanations and instant answers. It adapts to your learning style, offering personalized guidance to help you study smarter and reduce homework stress.

**Highlights:** AI-powered explanations, Step-by-step problem solving, Instant answers, Personalized learning, Smart scanner, AI chat support

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math.Brain: AI Homework Helper | $12.99 | per 7 days |
| Math.Brain: AI Homework Helper | $12.99 | per 7 days |
| Math.Brain: AI Homework Helper | $14.99 | per month |
| Math.Brain: AI Homework Helper | $15.99 | per month |


### HSK CERT

[App page](https://appshunter.io/ios/app/hsk-cert-learn-chinese/id6746539268)

Master Chinese with an official AI-powered platform offering free HSK 3.0 courses in 17 native languages. Prepare for exams with realistic mock tests and earn official HSK 1-2 certificates directly in the app. Enjoy gamified learning with daily rewards and AI-driven personalized study paths.

**Highlights:** Free HSK 3.0 courses, 17 native language support, Official HSK 1-2 certification in-app, Real HSK mock exams, Gamified learning with rewards, AI handwriting and pronunciation practice, Personalized learning paths

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HSKCERT VIP 1个月 | $9.99 | per month |
| HSKCERT VIP 6个月 | $59.99 | per 6 months |
| HSKCERT VIP 12个月 | $99.99 | per year |
| HSK1 认证次数 | $29.99 | one-time |
| HSK2 认证次数 | $44.99 | one-time |
| HSK1 学测一体包 | $65.00 | one-time |
| HSK2 学测一体包 | $93.00 | one-time |

**What reviewers like**

- 👍 Official HSK app
- 👍 Practical and useful for learning Chinese
- 👍 Clear and easy-to-understand interface
- 👍 Suitable for all levels (beginner to advanced)
- 👍 Accurate translations

**What reviewers complain about**

- 🐛 Poor implementation for an official app
- 🐛 Payment required after 3 mistakes daily
- 🐛 Some translations are wrong
- 🐛 Russian localization strings are incorrect (Mongolian, Belarusian, AI prompts)

**Reported bugs**

- Continue button not working
- Russian localization strings are incorrect

**Requested features**

- More interesting interface
- Chinese slang content
- More interactive speaking practices
- More content based on real-life situations in China
- Add business Chinese module


## Frequently asked questions

### Is Math.Brain free?

Math.Brain is free to download, with in-app purchases available.

### Is HSK CERT free?

HSK CERT is free to download, with in-app purchases available.

### Which has better reviews, Math.Brain or HSK CERT?

Math.Brain is rated higher. Math.Brain averages 4.8 out of 5 from 90 ratings, while HSK CERT averages 4.2 from 17 ratings.

### Do Math.Brain or HSK CERT have ads?

Math.Brain shows ads; HSK CERT does not.

### Which is updated more often, Math.Brain or HSK CERT?

Math.Brain ships an update every 8 days, and HSK CERT fortnightly. Most recently, Math.Brain was updated on November 5, 2026 and HSK CERT 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.*