# KENGSOB vs Math Easy Note ป.4

The clearest difference is in-app purchases: KENGSOB at none against Math Easy Note ป.4's 1. KENGSOB also leads on iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Math Easy Note ป.4 sells 1 one-off in-app purchase. KENGSOB asks for nothing beyond the download.

## The numbers

| Metric | KENGSOB | Math Easy Note ป.4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | — |
| Size | 190 MB | 18 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CHULALONGKORN UNIVERSITY BOOK CENTER](https://appshunter.io/developer/1841602247) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### KENGSOB

[App page](https://appshunter.io/ios/app/kengsob/id6752893704)

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Easy Note ป.4

[App page](https://appshunter.io/ios/app/math-easy-note-46/id6804166379)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is KENGSOB free?

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

### Is Math Easy Note ป.4 free?

Math Easy Note ป.4 is free to download, with in-app purchases available.

### Do KENGSOB or Math Easy Note ป.4 have ads?

Both KENGSOB and Math Easy Note ป.4 show ads.

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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.*