# robo vs Rx

The clearest difference is iOS requirement: robo at 9.0 against Rx's 11.0. 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.

## The numbers

| Metric | robo | Rx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | — |
| Size | 33 MB | 5 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Touch Bionics, Inc.](https://appshunter.io/developer/622776964) | [RxHearing Aids Inc](https://appshunter.io/developer/1609774889) |

## What reviewers say

### robo

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

**In-app purchases:** none


### Rx

[App page](https://appshunter.io/ios/app/rx-max/id6475139395)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is robo free?

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

### Is Rx free?

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

### Do robo or Rx have ads?

Neither robo nor Rx 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.*