# Chemical Formulas Quiz vs Structural Formulas Study

The clearest difference is rating: Structural Formulas Study at 5.0 against Chemical Formulas Quiz's 4.4. Structural Formulas Study also leads on update cadence (every 5 weeks vs every 3 months). Chemical Formulas Quiz's advantage is ratings volume (7 vs 1) and iOS requirement (11 vs 18.4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Structural Formulas Study holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Chemical Formulas Quiz has 7 ratings behind it against 1, so its average is the more settled of the two.

Chemical Formulas Quiz ships an update every 3 months, Structural Formulas Study every 5 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Chemical Formulas Quiz | Structural Formulas Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/chemical-formulas-quiz/id1338676361/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/structural-formulas-study/id6752260162/reviews)** |
| Number of ratings | **7** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 9 MB | 5 MB |
| Requires iOS | **11** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marijn Dillen](https://appshunter.io/developer/1276712320) | [Jun Yamabe](https://appshunter.io/developer/1732682049) |

## What reviewers say

### Chemical Formulas Quiz

[App page](https://appshunter.io/ios/app/chemical-formulas-quiz/id1338676361)

Master chemical formulas through engaging multiple-choice quizzes. Learn inorganic and organic substances and ions commonly taught in high school. The app provides common and systematic names to aid your learning.

**Highlights:** Learn inorganic and organic formulas, Multiple choice quizzes, Common and systematic names, High school curriculum focus, Free to play

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

**In-app purchases:** none


### Structural Formulas Study

[App page](https://appshunter.io/ios/app/structural-formulas-study/id6752260162)

Explore and study over 100 molecular structures with detailed properties and clear diagrams. This app offers quick search and filtering for efficient exam preparation and daily learning, with offline access available.

**Highlights:** 100+ molecular structures, Detailed structural formulas, Essential chemical properties, Quick search and filters, Offline access, Exam preparation tool

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

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Formulas Quiz free?

Chemical Formulas Quiz is free to download, with no in-app purchases.

### Is Structural Formulas Study free?

Structural Formulas Study is free to download, with no in-app purchases.

### Which has better reviews, Chemical Formulas Quiz or Structural Formulas Study?

Structural Formulas Study is rated higher. Chemical Formulas Quiz averages 4.4 out of 5 from 7 ratings, while Structural Formulas Study averages 5.0 from 1 ratings.

### Do Chemical Formulas Quiz or Structural Formulas Study have ads?

Neither Chemical Formulas Quiz nor Structural Formulas Study shows ads.

### Which is updated more often, Chemical Formulas Quiz or Structural Formulas Study?

Chemical Formulas Quiz ships an update every 3 months, and Structural Formulas Study every 5 weeks. Most recently, Chemical Formulas Quiz was updated on October 24, 2026 and Structural Formulas Study 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.*