# Molecular Formula Generator vs Functional Groups

The clearest difference is in-app purchases: Molecular Formula Generator at none against Functional Groups's 1. Molecular Formula Generator also leads on iOS requirement (7.0 vs 15.0). Functional Groups's advantage is update cadence (every 4 months vs every 16 months) and ratings volume (21 vs 3). On price, rating, ads and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Molecular Formula Generator against 4.9 for Functional Groups. That said, the two scores are not equally well evidenced: Functional Groups has 21 ratings behind it against 3, so its average is the more settled of the two.

Molecular Formula Generator ships an update every 16 months, Functional Groups every 4 months. Both last shipped on October 11, 2026.

## The numbers

| Metric | Molecular Formula Generator | Functional Groups |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/molecular-formula-generator/id646768652/reviews)** | [4.9 (21 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews) |
| Number of ratings | 3 | **21** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 4 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 17 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kirill Blinov](https://appshunter.io/developer/630833420) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### Molecular Formula Generator

[App page](https://appshunter.io/ios/app/molecular-formula-generator/id646768652)

This app generates a comprehensive list of molecular formulas based on mass spectrometry data and elemental composition. Users can specify m/z values, mass accuracy, and potential elements to find matching formulas. The generated lists can be shared via email.

**Highlights:** Generate molecular formulas by m/z value, Specify mass accuracy, Define elemental composition, Include double bond equivalents, Share formula lists via email

**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 Molecular Formula Generator free?

Molecular Formula Generator is free to download, with no in-app purchases.

### Is Functional Groups free?

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

### Which has better reviews, Molecular Formula Generator or Functional Groups?

Molecular Formula Generator is rated higher. Molecular Formula Generator averages 5.0 out of 5 from 3 ratings, while Functional Groups averages 4.9 from 21 ratings.

### Do Molecular Formula Generator or Functional Groups have ads?

Neither Molecular Formula Generator nor Functional Groups shows ads.

### Which is updated more often, Molecular Formula Generator or Functional Groups?

Molecular Formula Generator ships an update every 16 months, and Functional Groups every 4 months. Most recently, Molecular Formula Generator was updated on October 11, 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.*