# OngBut AI vs Master Anh Đức

The clearest difference is update cadence: Master Anh Đức at every 4 days against OngBut AI's every 2 months. OngBut AI's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. OngBut AI sells 6 one-off in-app purchases and Master Anh Đức sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OngBut AI ships an update every 2 months, Master Anh Đức every 4 days. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | OngBut AI | Master Anh Đức |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ongbut-ai/id1634128273/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 231 MB | 33 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ITSOL TECHNOLOGICAL HUMAN RESOURE AND SOLUTION JOINT STOCK COMPANY](https://appshunter.io/developer/1634128275) | [Van Thang Hoang](https://appshunter.io/developer/1725702339) |

## What reviewers say

### OngBut AI

[App page](https://appshunter.io/ios/app/ongbut-ai/id1634128273)

This educational platform addresses the needs and challenges of students, parents, and teachers through the application of IT. It offers comprehensive solutions to learning difficulties and administrative tasks.

**Highlights:** Addresses student needs, Solves parent challenges, Supports teacher difficulties, Utilizes IT platform, Comprehensive educational solutions

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold basic 1 | $1.99 | one-time |
| Gold basic 2 | $3.99 | one-time |
| Gold medium | $7.99 | one-time |
| Classroom | $8.99 | one-time |
| Gold advance | $19.99 | one-time |
| Course | $30.99 | one-time |


### Master Anh Đức

[App page](https://appshunter.io/ios/app/master-anh-uc/id6756199721)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Happiness | $69.99 | one-time |


## Frequently asked questions

### Is OngBut AI free?

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

### Is Master Anh Đức free?

Master Anh Đức is free to download, with in-app purchases available.

### Do OngBut AI or Master Anh Đức have ads?

Neither OngBut AI nor Master Anh Đức shows ads.

### Which is updated more often, OngBut AI or Master Anh Đức?

OngBut AI ships an update every 2 months, and Master Anh Đức every 4 days. Most recently, OngBut AI was updated on October 9, 2026 and Master Anh Đức on October 7, 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.*