# Structural Formulas Study vs Fractal Lens

The clearest difference is update cadence: Fractal Lens at every 9 days against Structural Formulas Study's every 5 weeks. On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Structural Formulas Study against 5.0 for Fractal Lens. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Structural Formulas Study ships an update every 5 weeks, Fractal Lens every 9 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Structural Formulas Study | Fractal Lens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/structural-formulas-study/id6752260162/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fractal-lens/id6794895795/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 9 days** |
| Monetization | Free | Free |
| Size | 5 MB | 1 MB |
| Requires iOS | 18.4 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jun Yamabe](https://appshunter.io/developer/1732682049) | [ANTHONY ZALESKI](https://appshunter.io/developer/6794895797) |

## 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


### Fractal Lens

[App page](https://appshunter.io/ios/app/fractal-lens/id6794895795)

Analyze the fractal dimension of objects by snapping or uploading photos. Explore mathematical concepts with intuitive animations and save your discoveries in a personal gallery. All computations are performed locally on your device.

**Highlights:** Compute fractal dimension from photos, Automatic pre-processing and box-counting algorithms, Intuitive animations and haptics, Save analyses to a gallery, Local device computations and storage

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

**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 Fractal Lens free?

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

### Which has better reviews, Structural Formulas Study or Fractal Lens?

Structural Formulas Study and Fractal Lens are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Structural Formulas Study or Fractal Lens have ads?

Neither Structural Formulas Study nor Fractal Lens shows ads.

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

Structural Formulas Study ships an update every 5 weeks, and Fractal Lens every 9 days. Most recently, Structural Formulas Study was updated on October 12, 2026 and Fractal Lens on October 7, 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.*