# TUS Library vs Physics Note ม.4

The clearest difference is in-app purchases: TUS Library at none against Physics Note ม.4's 1. TUS Library also leads on ads (none vs shown) and iOS requirement (11.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Physics Note ม.4 sells 1 one-off in-app purchase. TUS Library asks for nothing beyond the download.

## The numbers

| Metric | TUS Library | Physics Note ม.4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | — |
| Size | 34 MB | 19 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Openserve Co.,Ltd.](https://appshunter.io/developer/479158615) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### TUS Library

[App page](https://appshunter.io/ios/app/tus-library/id1393919716)

**Features:** macOS Compatibility

**In-app purchases:** none


### Physics Note ม.4

[App page](https://appshunter.io/ios/app/physics-note-4-6/id6804396132)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is TUS Library free?

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

### Is Physics Note ม.4 free?

Physics Note ม.4 is free to download, with in-app purchases available.

### Do TUS Library or Physics Note ม.4 have ads?

Physics Note ม.4 shows ads; TUS Library does not.

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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.*