# Sensory Circula vs R2

Sensory Circula and R2 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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.

## The numbers

| Metric | Sensory Circula | R2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (15 ratings)](https://appshunter.io/ios/app/r2-d2-vocalizer/id1579187620/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 11 days |
| Monetization | — | Free |
| Size | 7 MB | 171 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sensory App House Ltd](https://appshunter.io/developer/1361994084) | [Michael Perl](https://appshunter.io/developer/1579187622) |

## What reviewers say

### Sensory Circula

[App page](https://appshunter.io/ios/app/sensory-circula/id1564067071)

**Features:** macOS Compatibility, Game Controller support

**In-app purchases:** none


### R2

[App page](https://appshunter.io/ios/app/r2-d2-vocalizer/id1579187620)

This app generates unique R2-D2 vocalizations based on emotional stimuli or custom scripts. Its AI analyzes R2-D2's personality and speech patterns to create authentic-sounding beeps and whistles.

**Highlights:** AI-powered R2-D2 vocalizations, Emotional stimulus buttons, Script panel for manual creation, Grammatical AI recommendations, Store and recall custom vocalizations, Unique sound generation algorithm

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sensory Circula free?

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

### Is R2 free?

R2 is free to download, with no in-app purchases.

### Do Sensory Circula or R2 have ads?

Neither Sensory Circula nor R2 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.*