# Coding Galaxy vs Chemistry Glossary

The clearest difference is in-app purchases: Chemistry Glossary at none against Coding Galaxy's 2. Coding Galaxy's advantage is update cadence (fortnightly vs every 31 months) and iOS requirement (9.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. Coding Galaxy sells 2 in-app purchases, starting at $4.99 per month. Chemistry Glossary asks for nothing beyond the download.

Coding Galaxy ships an update fortnightly, Chemistry Glossary every 31 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Coding Galaxy | Chemistry Glossary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 31 months |
| Size | 45 MB | 85 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Tangor Technology Limited](https://appshunter.io/developer/1108855801) | [Apps Resource Centre, Hong Kong Baptist University](https://appshunter.io/developer/1375410542) |

## What reviewers say

### Coding Galaxy

[App page](https://appshunter.io/ios/app/coding-galaxy-city-x/id1472707484)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CGSC Monthly Plan | $4.99 | per month |
| CGSC Yearly Plan | $39.99 | per year |


### Chemistry Glossary

[App page](https://appshunter.io/ios/app/chemistry-glossary/id1601772255)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Coding Galaxy free?

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

### Is Chemistry Glossary free?

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

### Do Coding Galaxy or Chemistry Glossary have ads?

Neither Coding Galaxy nor Chemistry Glossary shows ads.

### Which is updated more often, Coding Galaxy or Chemistry Glossary?

Coding Galaxy ships an update fortnightly, and Chemistry Glossary every 31 months. Most recently, Coding Galaxy was updated on November 3, 2026 and Chemistry Glossary on November 4, 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.*