# Functional Groups vs General Chemistry Test Prep

The clearest difference is update cadence: Functional Groups at every 4 months against General Chemistry Test Prep's every 14 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Functional Groups sells 1 one-off in-app purchase and General Chemistry Test Prep sells 9 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Functional Groups ships an update every 4 months, General Chemistry Test Prep every 14 months. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Functional Groups | General Chemistry Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (21 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 14 months |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 53 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Clarity Applications](https://appshunter.io/developer/1646120472) | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) |

## What reviewers say

### 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 |


### General Chemistry Test Prep

[App page](https://appshunter.io/ios/app/general-chemistry-test-prep/id6744531345)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry Weekly Full Access | $8.99 | per 7 days |
| Chemistry Monthly Full Access | $24.99 | per month |
| ACS Monthly Full Access | $34.99 | per month |
| ACS Quarterly Full Access | $55.99 | per 3 months |
| ACS Quarterly Full Access | $59.99 | per 3 months |
| ACS Semiannual Full Access | $75.99 | per 6 months |
| ACS Semiannual Full Access | $79.99 | per 6 months |
| ACS Annual Full Access | $109.99 | per year |
| ACS Annual Full Access | $119.99 | per year |


## Frequently asked questions

### Is Functional Groups free?

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

### Is General Chemistry Test Prep free?

General Chemistry Test Prep is free to download, with in-app purchases available.

### Do Functional Groups or General Chemistry Test Prep have ads?

Neither Functional Groups nor General Chemistry Test Prep shows ads.

### Which is updated more often, Functional Groups or General Chemistry Test Prep?

Functional Groups ships an update every 4 months, and General Chemistry Test Prep every 14 months. Most recently, Functional Groups was updated on October 11, 2026 and General Chemistry Test Prep on October 12, 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.*