# robo vs Bioservo

The clearest difference is update cadence: Bioservo at every 3 weeks against robo's every 9 months. robo's advantage is iOS requirement (9.0 vs 15.0). 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.

robo ships an update every 9 months, Bioservo every 3 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | robo | Bioservo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Size | 33 MB | 55 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Touch Bionics, Inc.](https://appshunter.io/developer/622776964) | [Bioservo Technologies AB](https://appshunter.io/developer/1233609648) |

## What reviewers say

### robo

[App page](https://appshunter.io/ios/app/robo-limb/id773508024)

**In-app purchases:** none


### Bioservo

[App page](https://appshunter.io/ios/app/bioservo/id6447757572)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is robo free?

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

### Is Bioservo free?

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

### Do robo or Bioservo have ads?

Neither robo nor Bioservo shows ads.

### Which is updated more often, robo or Bioservo?

robo ships an update every 9 months, and Bioservo every 3 weeks. Most recently, robo was updated on October 7, 2026 and Bioservo on October 6, 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.*