# Stroboscopic Effect vs Structural Formulas Study

The clearest difference is update cadence: Structural Formulas Study at every 5 weeks against Stroboscopic Effect's every 84 months. Stroboscopic Effect's advantage is iOS requirement (8.0 vs 18.4). 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.

Stroboscopic Effect ships an update every 84 months, Structural Formulas Study every 5 weeks. The most recent releases landed on September 19, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Stroboscopic Effect | Structural Formulas Study |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (18 ratings)](https://appshunter.io/ios/app/stroboscopic-effect/id403009621/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 84 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 5 MB |
| Requires iOS | **8.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Magnin & Associates](https://appshunter.io/developer/312671572) | [Jun Yamabe](https://appshunter.io/developer/1732682049) |

## What reviewers say

### Stroboscopic Effect

[App page](https://appshunter.io/ios/app/stroboscopic-effect/id403009621)

Explore the fascinating stroboscopic effect by rotating various objects. Observe how objects can appear to stop or move backward at specific speeds. This app allows you to manipulate rotation direction and speed to witness these optical illusions.

**Highlights:** Rotate 4 different objects, Adjust rotation speed, Change rotation direction, Observe stroboscopic effect, Supports iPad, iPhone, and Retina display

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

**In-app purchases:** none


### Structural Formulas Study

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stroboscopic Effect free?

Stroboscopic Effect 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.

### Do Stroboscopic Effect or Structural Formulas Study have ads?

Neither Stroboscopic Effect nor Structural Formulas Study shows ads.

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

Stroboscopic Effect ships an update every 84 months, and Structural Formulas Study every 5 weeks. Most recently, Stroboscopic Effect was updated on September 19, 2026 and Structural Formulas Study on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*