# 常春藤108課綱進階單字 vs ChemoCat化學貓

The clearest difference is price: ChemoCat化學貓 at Free against 常春藤108課綱進階單字's $5.99. 常春藤108課綱進階單字's advantage is in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 4 months). On ads and device support there is nothing between them.

ChemoCat化學貓 is free to download; 常春藤108課綱進階單字 costs $5.99 up front. ChemoCat化學貓 sells 2 one-off in-app purchases. 常春藤108課綱進階單字 asks for nothing beyond the download.

常春藤108課綱進階單字 ships an update every 2 weeks, ChemoCat化學貓 every 4 months. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 常春藤108課綱進階單字 | ChemoCat化學貓 |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Size | 333 MB | 480 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Otek International Inc.](https://appshunter.io/developer/318583126) | [YUE CHENG WU](https://appshunter.io/developer/1837857381) |

## What reviewers say

### 常春藤108課綱進階單字

[App page](https://appshunter.io/ios/app/108/id6449987128)

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

**In-app purchases:** none


### ChemoCat化學貓

[App page](https://appshunter.io/ios/app/chemocat/id6753624892)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 影月煉金包 | $0.99 | one-time |
| 虛空秘製包 | $1.99 | one-time |


## Frequently asked questions

### Is 常春藤108課綱進階單字 free?

常春藤108課綱進階單字 costs $5.99, with no in-app purchases.

### Is ChemoCat化學貓 free?

ChemoCat化學貓 is free to download, with in-app purchases available.

### Do 常春藤108課綱進階單字 or ChemoCat化學貓 have ads?

Neither 常春藤108課綱進階單字 nor ChemoCat化學貓 shows ads.

### Which is updated more often, 常春藤108課綱進階單字 or ChemoCat化學貓?

常春藤108課綱進階單字 ships an update every 2 weeks, and ChemoCat化學貓 every 4 months. Most recently, 常春藤108課綱進階單字 was updated on October 16, 2026 and ChemoCat化學貓 on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*