# e vs Matrix Keen3D

The clearest difference is in-app purchases: Matrix Keen3D at none against e's 6. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. e sells 6 one-off in-app purchases. Matrix Keen3D asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | e | Matrix Keen3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (15 ratings)](https://appshunter.io/ios/app/e-motion-m25/id1364933862/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 18.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 127 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Alber GmbH](https://appshunter.io/developer/919890674) | [TechMed 3D](https://appshunter.io/developer/964196047) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-motion-m25/id1364933862)

This app enhances the functionality of e-motion electric wheelchair wheels. It offers pre-set driving profiles, GPS tracking, and error diagnostics in a free section. An optional paid package unlocks advanced features like increased speed, cruise control, and remote parking.

**Highlights:** Pre-set driving profiles, Speed, mileage, and charge display, GPS tour recording, Error diagnostics and troubleshooting, Software updates, Increased speed support, Cruise Mode for constant speed

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Push | $8.99 | one-time |
| Remote | $32.99 | one-time |
| Cruise | $84.99 | one-time |
| ECS | $84.99 | one-time |
| Speed | $84.99 | one-time |
| Mobility Plus Package | $249.99 | one-time |


### Matrix Keen3D

[App page](https://appshunter.io/ios/app/matrix-keen3d/id1500771002)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is e free?

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

### Is Matrix Keen3D free?

Matrix Keen3D is free to download, with no in-app purchases.

### Do e or Matrix Keen3D have ads?

Neither e nor Matrix Keen3D shows ads.

### Which is updated more often, e or Matrix Keen3D?

e ships an update every 2 months, and Matrix Keen3D every 2 months. Most recently, e was updated on September 23, 2026 and Matrix Keen3D on September 11, 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.*