# nguyensonmaths vs Diem danh app

The clearest difference is in-app purchases: nguyensonmaths at none against Diem danh app's 1. nguyensonmaths also leads on iOS requirement (12.0 vs 15.0). Diem danh app's advantage is update cadence (every 4 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Diem danh app sells 1 in-app purchase, starting at $22.99 per year. nguyensonmaths asks for nothing beyond the download.

nguyensonmaths ships an update fortnightly, Diem danh app every 4 days. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | nguyensonmaths | Diem danh app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 48 MB | 36 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Quang Le](https://appshunter.io/developer/1864146367) | [Anh Tran Tuan](https://appshunter.io/developer/1887151351) |

## What reviewers say

### nguyensonmaths

[App page](https://appshunter.io/ios/app/nguyensonmaths/id6469692500)

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

**In-app purchases:** none


### Diem danh app

[App page](https://appshunter.io/ios/app/diem-danh-app/id6782804149)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vip 1 năm | $22.99 | per year |


## Frequently asked questions

### Is nguyensonmaths free?

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

### Is Diem danh app free?

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

### Do nguyensonmaths or Diem danh app have ads?

Neither nguyensonmaths nor Diem danh app shows ads.

### Which is updated more often, nguyensonmaths or Diem danh app?

nguyensonmaths ships an update fortnightly, and Diem danh app every 4 days. Most recently, nguyensonmaths was updated on October 13, 2026 and Diem danh app on October 10, 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.*