# 3D Rotations and Quaternions vs HelixPlot

3D Rotations and Quaternions and HelixPlot are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

3D Rotations and Quaternions ships an update every 3 weeks, HelixPlot fortnightly. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 3D Rotations and Quaternions | HelixPlot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 1 MB | 12 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuri Morozov](https://appshunter.io/developer/1582368813) | [Yonghun Kim](https://appshunter.io/developer/1851972427) |

## What reviewers say

### 3D Rotations and Quaternions

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

**Features:** macOS Compatibility

**In-app purchases:** none


### HelixPlot

[App page](https://appshunter.io/ios/app/helixplot/id6757285741)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3D Rotations and Quaternions free?

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

### Is HelixPlot free?

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

### Do 3D Rotations and Quaternions or HelixPlot have ads?

Neither 3D Rotations and Quaternions nor HelixPlot shows ads.

### Which is updated more often, 3D Rotations and Quaternions or HelixPlot?

3D Rotations and Quaternions ships an update every 3 weeks, and HelixPlot fortnightly. Most recently, 3D Rotations and Quaternions was updated on October 10, 2026 and HelixPlot 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.*