# Biosim vs Motion Arm UI

Biosim and Motion Arm UI 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.

Biosim ships an update every 5 months, Motion Arm UI every 8 months. The most recent releases landed on September 7, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Biosim | Motion Arm UI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/biosim/id622776961/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 8 months |
| Monetization | Free | — |
| Size | 51 MB | 31 MB |
| Requires iOS | 12.1 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Touch Bionics, Inc.](https://appshunter.io/developer/622776964) | [Motion Control Inc.](https://appshunter.io/developer/787443189) |

## What reviewers say

### Biosim

[App page](https://appshunter.io/ios/app/biosim/id622776961)

This application allows clinicians to customize prosthetic devices for clients on the go. It offers various grip options, favorite lists, hand health checks, and real-time muscle signal viewing.

**Highlights:** Customize prosthesis on the move, Access 24 quick grips and 12 customizable grips, Create favorite lists and triggers, Activate hand health check, View real-time muscle signals, Apply firmware updates

**In-app purchases:** none


### Motion Arm UI

[App page](https://appshunter.io/ios/app/motion-arm-ui/id1327572766)

**In-app purchases:** none


## Frequently asked questions

### Is Biosim free?

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

### Is Motion Arm UI free?

Motion Arm UI is free to download, with no in-app purchases.

### Do Biosim or Motion Arm UI have ads?

Neither Biosim nor Motion Arm UI shows ads.

### Which is updated more often, Biosim or Motion Arm UI?

Biosim ships an update every 5 months, and Motion Arm UI every 8 months. Most recently, Biosim was updated on September 7, 2026 and Motion Arm UI on September 8, 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.*