# Eigen Running vs 3DSeg/JointAngles

The clearest difference is iOS requirement: Eigen Running at 18.6 against 3DSeg/JointAngles's 26.2. 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.

## The numbers

| Metric | Eigen Running | 3DSeg/JointAngles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/3dsegjointangles/id6761221410/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | — | Free |
| Size | 70 MB | 5 MB |
| Requires iOS | **18.6** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Eigen Running GmbH](https://appshunter.io/developer/1833177524) | [Boyi Dai](https://appshunter.io/developer/1888293968) |

## What reviewers say

### Eigen Running

[App page](https://appshunter.io/ios/app/eigen-running/id6751028383)

**Features:** macOS Compatibility

**In-app purchases:** none


### 3DSeg/JointAngles

[App page](https://appshunter.io/ios/app/3dsegjointangles/id6761221410)

This app measures three-dimensional angles of body segments and joints in real-time using your iPhone's motion sensors. It is designed for researchers, clinicians, and trainers to analyze movement without external hardware. Data can be exported for further analysis.

**Highlights:** Real-time 3D angle display at 60 Hz, Six selectable Cardan/Euler rotation sequences, Calibrate to any starting position, Built-in angle time-series plot, CSV export via iOS Share Sheet, Works completely offline

**In-app purchases:** none


## Frequently asked questions

### Is Eigen Running free?

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

### Is 3DSeg/JointAngles free?

3DSeg/JointAngles is free to download, with no in-app purchases.

### Do Eigen Running or 3DSeg/JointAngles have ads?

Neither Eigen Running nor 3DSeg/JointAngles 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.*