# Class Rate vs Structural Dynamics Visualizer

The clearest difference is in-app purchases: Structural Dynamics Visualizer at none against Class Rate's 1. Class Rate's advantage is iOS requirement (15.5 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. Class Rate sells 1 in-app purchase, starting at $2.99 per year. Structural Dynamics Visualizer asks for nothing beyond the download.

## The numbers

| Metric | Class Rate | Structural Dynamics Visualizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/structural-dynamics-visualizer/id6810331487/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | — | Free |
| Size | 101 MB | 8 MB |
| Requires iOS | **15.5** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ceyda bulak](https://appshunter.io/developer/1852316171) | [MICHAEL PATRICK BERRY](https://appshunter.io/developer/6810331489) |

## What reviewers say

### Class Rate

[App page](https://appshunter.io/ios/app/class-rate-student-scoring/id1642220939)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Subscription | $2.99 | per year |


### Structural Dynamics Visualizer

[App page](https://appshunter.io/ios/app/structural-dynamics-visualizer/id6810331487)

Explore structural vibrations with this interactive educational tool. Visualize free and forced vibrations, mode shapes, and earthquake responses using animated models and synchronized plots. Adjust system parameters to see immediate effects on structural behavior.

**Highlights:** Free vibration analysis, Forced vibration and resonance, SDOF and MDOF models, Mode shape visualization, Earthquake response simulation, Interactive parameter adjustment, Animated structural deformation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Class Rate free?

Class Rate is free to download, with in-app purchases available.

### Is Structural Dynamics Visualizer free?

Structural Dynamics Visualizer is free to download, with no in-app purchases.

### Do Class Rate or Structural Dynamics Visualizer have ads?

Neither Class Rate nor Structural Dynamics Visualizer shows ads.

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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.*