# Tap OChem vs Functional Groups

The clearest difference is price: Functional Groups at Free against Tap OChem's $4.99. Functional Groups also leads on rating (4.9 vs 4.7) and review sentiment (100% vs 92%). Tap OChem's advantage is in-app purchases (none vs 1) and iOS requirement (13.2 vs 15.0). On ratings volume, update cadence, ads and device support there is nothing between them.

Functional Groups is free to download; Tap OChem costs $4.99 up front. Functional Groups sells 1 one-off in-app purchase. Tap OChem asks for nothing beyond the download.

Functional Groups holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 39 and 21 respectively. Written reviews point the same way: 92% of Tap OChem's written reviews are positive against 100% of Functional Groups's.

Tap OChem ships an update every 3 months, Functional Groups every 4 months. The most recent releases landed on September 23, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Tap OChem | Functional Groups |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.7 (39 ratings)](https://appshunter.io/ios/app/tap-ochem/id579861146/reviews) | **[4.9 (21 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews)** |
| Number of ratings | **39** | 21 |
| Positive reviews | 91.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3.5 GB | 17 MB |
| Requires iOS | **13.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tap OChem, LLC](https://appshunter.io/developer/579861209) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### Tap OChem

[App page](https://appshunter.io/ios/app/tap-ochem/id579861146)

Visualize complex organic chemistry reactions and concepts with animated explanations. This app covers a wide range of undergraduate organic chemistry topics, aiding in exam preparation and understanding of molecular behavior.

**Highlights:** Animated organic chemistry reactions, Detailed concept explanations, Electron pushing diagrams, Full-color text descriptions, MCAT, PCAT, OAT, DAT prep, Regular content updates

**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 Tap OChem free?

Tap OChem costs $4.99, with no in-app purchases.

### Is Functional Groups free?

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

### Which has better reviews, Tap OChem or Functional Groups?

Functional Groups is rated higher. Tap OChem averages 4.7 out of 5 from 39 ratings, while Functional Groups averages 4.9 from 21 ratings.

### Do Tap OChem or Functional Groups have ads?

Neither Tap OChem nor Functional Groups shows ads.

### Which is updated more often, Tap OChem or Functional Groups?

Tap OChem ships an update every 3 months, and Functional Groups every 4 months. Most recently, Tap OChem was updated on September 23, 2026 and Functional Groups on October 11, 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.*