# Open Bionics Sidekick vs misTMJ

The clearest difference is iOS requirement: misTMJ at 11.0 against Open Bionics Sidekick's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Open Bionics Sidekick ships an update every 2 months, misTMJ monthly. The most recent releases landed on July 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Open Bionics Sidekick | misTMJ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/open-bionics-sidekick/id1565393107/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | — |
| Size | 89 MB | 594 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Open Bionics](https://appshunter.io/developer/1565393109) | [Himalaya Computing](https://appshunter.io/developer/1205321932) |

## What reviewers say

### Open Bionics Sidekick

[App page](https://appshunter.io/ios/app/open-bionics-sidekick/id1565393107)

This app supports users of advanced prosthetic limbs with guided exercises and personalized training programs. Access expert tips through a video library and track your progress to optimize your bionic experience. Customize your device for maximum benefit.

**Highlights:** Guided exercises, Personalized training programs, Searchable video library, Progress tracking, Device customization

**Features:** Vision Pro support

**In-app purchases:** none


### misTMJ

[App page](https://appshunter.io/ios/app/mistmj/id1592838220)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Open Bionics Sidekick free?

Open Bionics Sidekick is free to download, with no in-app purchases.

### Is misTMJ free?

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

### Do Open Bionics Sidekick or misTMJ have ads?

Neither Open Bionics Sidekick nor misTMJ shows ads.

### Which is updated more often, Open Bionics Sidekick or misTMJ?

Open Bionics Sidekick ships an update every 2 months, and misTMJ monthly. Most recently, Open Bionics Sidekick was updated on July 23, 2026 and misTMJ on September 18, 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.*