# Learn Amino Acids vs Functional Groups

The clearest difference is review sentiment: Functional Groups at 100% against Learn Amino Acids's 50%. Learn Amino Acids's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 4 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. Learn Amino Acids asks for nothing beyond the download.

Learn Amino Acids ships an update every 3 weeks, Functional Groups every 4 months. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Learn Amino Acids | 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 | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 1 MB | 17 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Maximilian Munker](https://appshunter.io/developer/983733173) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### Learn Amino Acids

[App page](https://appshunter.io/ios/app/learn-amino-acids/id983737940)

This educational app aids students in memorizing 20 human amino acids. It categorizes them into four distinct groups: positive, negative, non-polar, and uncharged polar, with solutions provided for practice.

**Highlights:** Memorize 20 human amino acids, Categorized into 4 groups, Positive amino acids, Negative amino acids, Non-polar amino acids, Unloaded polar amino acids, Solutions included

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

**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 Learn Amino Acids free?

Learn Amino Acids 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 Learn Amino Acids or Functional Groups have ads?

Neither Learn Amino Acids nor Functional Groups shows ads.

### Which is updated more often, Learn Amino Acids or Functional Groups?

Learn Amino Acids ships an update every 3 weeks, and Functional Groups every 4 months. Most recently, Learn Amino Acids was updated on October 14, 2026 and Functional Groups 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.*