# MZI Classes vs Kibin

The clearest difference is update cadence: Kibin at weekly against MZI Classes's every 8 months. MZI Classes's advantage is device support (3 vs 1) and iOS requirement (15.5 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. MZI Classes sells 10 one-off in-app purchases and Kibin sells 3 in-app purchases, starting at $12.99 per 7 days. Whichever you choose, the download price is not the number that matters.

MZI Classes ships an update every 8 months, Kibin weekly. Both last shipped on October 28, 2026.

## The numbers

| Metric | MZI Classes | Kibin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/kibin-ai-study-buddy-and-tutor/id6761867175/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 147 MB | 79 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Online Learning](https://appshunter.io/developer/1790866777) | [Kibin Inc.](https://appshunter.io/developer/1891859379) |

## What reviewers say

### MZI Classes

[App page](https://appshunter.io/ios/app/mzi-classes/id6745729111)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - AG | $22.99 | one-time |
| Package - AJ | $24.99 | one-time |
| Package - AP | $29.99 | one-time |
| Package - AV | $34.99 | one-time |
| Package - BB | $39.99 | one-time |
| Package - AY | $39.99 | one-time |
| Package - BE | $44.99 | one-time |
| Package - BH | $49.99 | one-time |
| Package - BG | $49.99 | one-time |
| Package - BF | $49.99 | one-time |


### Kibin

[App page](https://appshunter.io/ios/app/kibin-ai-study-buddy-and-tutor/id6761867175)

Transform lectures, PDFs, audio, and videos into AI-generated study notes, quizzes, and flashcards. This tool provides instant feedback on your understanding and tracks your mastery in real-time to prepare you for exams.

**Highlights:** AI study notes generation, Custom quizzes and flashcards, Explain mode with AI feedback, Real-time mastery tracking, Simulated course exams, Cross-device syncing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kibin Pro | $12.99 | per 7 days |
| Kibin Pro | $24.99 | per month |
| Kibin Pro | $139.99 | per year |


## Frequently asked questions

### Is MZI Classes free?

MZI Classes is free to download, with in-app purchases available.

### Is Kibin free?

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

### Do MZI Classes or Kibin have ads?

Neither MZI Classes nor Kibin shows ads.

### Which is updated more often, MZI Classes or Kibin?

MZI Classes ships an update every 8 months, and Kibin weekly. Most recently, MZI Classes was updated on October 28, 2026 and Kibin on October 28, 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.*