# 空軍官校行動圖書館 vs Periodic Table

The clearest difference is in-app purchases: 空軍官校行動圖書館 at none against Periodic Table's 2. 空軍官校行動圖書館 also leads on iOS requirement (12.0 vs 17.0). Periodic Table's advantage is device support. On price there is nothing between them.

Both are free to download. Periodic Table sells 2 one-off in-app purchases. 空軍官校行動圖書館 asks for nothing beyond the download.

## The numbers

| Metric | 空軍官校行動圖書館 | Periodic Table |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/periodic-table-elements-lab/id6780071541/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 9 days |
| Monetization | — | Free |
| Size | 11 MB | 143 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | — | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [凌網科技股份有限公司, Hyweb Technology Co., Ltd.](https://appshunter.io/developer/419081258) | [Rizk Corsight, LLC](https://appshunter.io/developer/1896065289) |

## What reviewers say

### 空軍官校行動圖書館

[App page](https://appshunter.io/ios/app/id1398131453)

**In-app purchases:** none


### Periodic Table

[App page](https://appshunter.io/ios/app/periodic-table-elements-lab/id6780071541)

Explore all 118 elements with detailed data, original illustrations, and a spaced-repetition study system. Features include a guided equation balancer, 3D atom view, and molar-mass calculator. This private app works offline and is designed for effective learning.

**Highlights:** All 118 elements with original illustrations, Spaced-repetition study system, Guided equation balancer, 3D atom view, Molar-mass calculator, Offline functionality, Curriculum packs for AP, IB, A-Level, GCSE, MCAT

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | Free | one-time |
| Full Access Unlock | $4.99 | one-time |


## Frequently asked questions

### Is 空軍官校行動圖書館 free?

空軍官校行動圖書館 is free to download, with no in-app purchases.

### Is Periodic Table free?

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

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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.*