# ROBOT BLUETOOTH vs Crystal FX (crystalfocus)

The clearest difference is review sentiment: Crystal FX (crystalfocus) at 73% against ROBOT BLUETOOTH's 0%. ROBOT BLUETOOTH's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 14.2). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Crystal FX (crystalfocus) sells 1 one-off in-app purchase. ROBOT BLUETOOTH asks for nothing beyond the download.

## The numbers

| Metric | ROBOT BLUETOOTH | Crystal FX (crystalfocus) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (19 ratings)](https://appshunter.io/ios/app/crystal-fx-crystalfocus/id1558308960/reviews)** |
| Number of ratings | — | **19** |
| Positive reviews | 0.0% of reviews | **72.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | Free | Free |
| Size | 149 MB | 64 MB |
| Requires iOS | **8.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [睦彬 王](https://appshunter.io/developer/1259740025) | [Tristan Kam](https://appshunter.io/developer/1558308962) |

## What reviewers say

### ROBOT BLUETOOTH

[App page](https://appshunter.io/ios/app/robot-bluetooth/id1407545270)

Control a smart robot's walking movements via Bluetooth. This application aims to bring more joy to childhood by enabling interactive robot play.

**Highlights:** Bluetooth robot control, Robot walking mechanics, Interactive play, Childhood entertainment

**Features:** macOS Compatibility

**In-app purchases:** none


### Crystal FX (crystalfocus)

[App page](https://appshunter.io/ios/app/crystal-fx-crystalfocus/id1558308960)

This app allows for deep customization of Bluetooth-enabled lightsabers. Users can change blade styles, colors, and sounds in real-time. It also enables easy sharing of custom designs between sabers and offers full control over all saber parameters.

**Highlights:** Blade style and color customization, Real-time soundfont management, Effortless blade style sharing via Bluetooth, Full parameter editing, Real-time visual preview, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crystal FX Master level access | $6.99 | one-time |


## Frequently asked questions

### Is ROBOT BLUETOOTH free?

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

### Is Crystal FX (crystalfocus) free?

Crystal FX (crystalfocus) is free to download, with in-app purchases available.

### Do ROBOT BLUETOOTH or Crystal FX (crystalfocus) have ads?

Neither ROBOT BLUETOOTH nor Crystal FX (crystalfocus) 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.*