# Chemistry Glossary vs Functional Groups

The clearest difference is in-app purchases: Chemistry Glossary at none against Functional Groups's 1. Chemistry Glossary also leads on iOS requirement (12.0 vs 15.0). Functional Groups's advantage is update cadence (every 4 months vs every 31 months). On price, ads and device support there is nothing between them.

Both are free to download. Functional Groups sells 1 one-off in-app purchase. Chemistry Glossary asks for nothing beyond the download.

Chemistry Glossary ships an update every 31 months, Functional Groups every 4 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Chemistry Glossary | Functional Groups |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (23 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews)** |
| Number of ratings | — | **23** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 4 months** |
| Monetization | — | Free with in-app purchases |
| Size | 85 MB | 17 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Apps Resource Centre, Hong Kong Baptist University](https://appshunter.io/developer/1375410542) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### Chemistry Glossary

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Functional Groups

[App page](https://appshunter.io/ios/app/functional-groups/id1670252638)

Master organic chemistry functional groups through an engaging and interactive learning experience. Ideal for students in introductory or advanced courses, MCAT prep, and A-Level chemistry, this app covers dozens of essential groups with practice modes and progress tracking.

**Highlights:** 25+ basic and advanced functional groups, 300+ organic compounds, Multiple practice modes, Customizable study groups, Personalized review, Reference table and definitions, Progress tracking with achievements

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is Chemistry Glossary free?

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

### Is Functional Groups free?

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

### Do Chemistry Glossary or Functional Groups have ads?

Neither Chemistry Glossary nor Functional Groups shows ads.

### Which is updated more often, Chemistry Glossary or Functional Groups?

Chemistry Glossary ships an update every 31 months, and Functional Groups every 4 months. Most recently, Chemistry Glossary was updated on November 7, 2026 and Functional Groups on November 3, 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.*