# 淡江化學人 vs SparkGlow

The clearest difference is in-app purchases: 淡江化學人 at none against SparkGlow's 4. 淡江化學人 also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.2). SparkGlow's advantage is update cadence (every 2 days vs every 3 months). On price and ads there is nothing between them.

Both are free to download. SparkGlow sells 4 in-app purchases, starting at $2.99 per month. 淡江化學人 asks for nothing beyond the download.

淡江化學人 ships an update every 3 months, SparkGlow every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 淡江化學人 | SparkGlow |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 24 MB | 31 MB |
| Requires iOS | **15.6** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wen-Chi Chou](https://appshunter.io/developer/1642680017) | [Yu Chen Huang](https://appshunter.io/developer/6793047805) |

## What reviewers say

### 淡江化學人

[App page](https://appshunter.io/ios/app/id6756286502)

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

**In-app purchases:** none


### SparkGlow

[App page](https://appshunter.io/ios/app/sparkglow/id6793047803)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SparkGlow Pro Monthly | $2.99 | per month |
| SparkGlow Max Monthly | $4.99 | per month |
| SparkGlow Pro Yearly | $29.99 | per year |
| SparkGlow Max Yearly | $39.99 | per year |


## Frequently asked questions

### Is 淡江化學人 free?

淡江化學人 is free to download, with no in-app purchases.

### Is SparkGlow free?

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

### Do 淡江化學人 or SparkGlow have ads?

Neither 淡江化學人 nor SparkGlow shows ads.

### Which is updated more often, 淡江化學人 or SparkGlow?

淡江化學人 ships an update every 3 months, and SparkGlow every 2 days. Most recently, 淡江化學人 was updated on October 25, 2026 and SparkGlow on October 24, 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.*