# Structural Formulas Study vs Quizzified

The clearest difference is update cadence: Structural Formulas Study at every 5 weeks against Quizzified's every 3 months. On price, ads, in-app purchases and device support 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 ships an update every 5 weeks, Quizzified every 3 months. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Structural Formulas Study | Quizzified |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/structural-formulas-study/id6752260162/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 5 MB | 17 MB |
| Requires iOS | 18.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jun Yamabe](https://appshunter.io/developer/1732682049) | [Sebastian Myllek](https://appshunter.io/developer/1869853641) |

## What reviewers say

### 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


### Quizzified

[App page](https://appshunter.io/ios/app/quizzified-chem/id6757946794)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Structural Formulas Study free?

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

### Is Quizzified free?

Quizzified is free to download, with no in-app purchases.

### Do Structural Formulas Study or Quizzified have ads?

Neither Structural Formulas Study nor Quizzified shows ads.

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

Structural Formulas Study ships an update every 5 weeks, and Quizzified every 3 months. Most recently, Structural Formulas Study was updated on November 8, 2026 and Quizzified on October 31, 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.*