# Run AiK vs 3DSeg/JointAngles

The clearest difference is in-app purchases: 3DSeg/JointAngles at none against Run AiK's 7. Run AiK's advantage is iOS requirement (18.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Run AiK sells 7 in-app purchases, starting at $4.99 per month. 3DSeg/JointAngles asks for nothing beyond the download.

## The numbers

| Metric | Run AiK | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | — | Free |
| Size | 225 MB | 5 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AIKYNETIX LLC](https://appshunter.io/developer/1565394041) | [Boyi Dai](https://appshunter.io/developer/1888293968) |

## What reviewers say

### Run AiK

[App page](https://appshunter.io/ios/app/run-aik/id6741048150)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $4.99 | per month |
| Pro | $19.99 | per month |
| Premium | $44.99 | per month |
| Basic | $53.99 | per year |
| Pro | $204.99 | per year |
| Premium | $439.99 | per year |
| Offline Processing | $1.99 | one-time |


### 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 Run AiK free?

Run AiK is free to download, with in-app purchases available.

### Is 3DSeg/JointAngles free?

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

### Do Run AiK or 3DSeg/JointAngles have ads?

Neither Run AiK 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.*