# iNSIGHT Spatial Vision vs 3D Rotations and Quaternions

The clearest difference is price: 3D Rotations and Quaternions at Free against iNSIGHT Spatial Vision's $2.99. 3D Rotations and Quaternions also leads on update cadence (every 3 weeks vs every 39 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

3D Rotations and Quaternions is free to download; iNSIGHT Spatial Vision costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iNSIGHT Spatial Vision ships an update every 39 months, 3D Rotations and Quaternions every 3 weeks. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | iNSIGHT Spatial Vision | 3D Rotations and Quaternions |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 weeks** |
| Size | 125 MB | 1 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Polyhedron Learning Media, Inc.](https://appshunter.io/developer/458882328) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## What reviewers say

### iNSIGHT Spatial Vision

[App page](https://appshunter.io/ios/app/insight-spatial-vision/id602302299)

**Features:** macOS Compatibility

**In-app purchases:** none


### 3D Rotations and Quaternions

[App page](https://appshunter.io/ios/app/3d-rotations-and-quaternions/id6618113140)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iNSIGHT Spatial Vision free?

iNSIGHT Spatial Vision costs $2.99, with no in-app purchases.

### Is 3D Rotations and Quaternions free?

3D Rotations and Quaternions is free to download, with no in-app purchases.

### Do iNSIGHT Spatial Vision or 3D Rotations and Quaternions have ads?

Neither iNSIGHT Spatial Vision nor 3D Rotations and Quaternions shows ads.

### Which is updated more often, iNSIGHT Spatial Vision or 3D Rotations and Quaternions?

iNSIGHT Spatial Vision ships an update every 39 months, and 3D Rotations and Quaternions every 3 weeks. Most recently, iNSIGHT Spatial Vision was updated on November 1, 2026 and 3D Rotations and Quaternions on November 4, 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.*