# Rubjoy vs SyncFree

The clearest difference is iOS requirement: Rubjoy at 10.0 against SyncFree's 14.0. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Rubjoy against 5.0 for SyncFree. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Rubjoy ships an update every 6 months, SyncFree every 8 months. The most recent releases landed on October 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Rubjoy | SyncFree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/rubjoy/id1517267222/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/syncfree/id6446890293/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 82 MB | 44 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [WINKGRIN LLC](https://appshunter.io/developer/1517267221) | [HONG KONG VALOR AND TOUGHNESS LIMITED](https://appshunter.io/developer/1679535982) |

## What reviewers say

### Rubjoy

[App page](https://appshunter.io/ios/app/rubjoy/id1517267222)

Control an advanced robotic arm with your smartphone. This app connects via Bluetooth to a micro-controller, allowing you to operate powerful servo motors for complex tasks. It's designed for a serious robotic platform, not a simple toy.

**Highlights:** Bluetooth connectivity, Control servo motors, Advanced robotics, Smartphone interface, Micro-controller integration

**In-app purchases:** none


### SyncFree

[App page](https://appshunter.io/ios/app/syncfree/id6446890293)

This app offers personalized control over a Syncbot device, allowing users to customize motion patterns and intensity for enhanced pleasure. It provides a secure and private experience with various motion combinations and six unique patterns for each mode.

**Highlights:** Personalized pleasure control, Secure and private Syncbot operation, Diverse motion pattern combinations, Precise control over stroking, rotation, grip, Six unique motion patterns per mode

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rubjoy free?

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

### Is SyncFree free?

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

### Which has better reviews, Rubjoy or SyncFree?

Rubjoy and SyncFree are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Rubjoy or SyncFree have ads?

Neither Rubjoy nor SyncFree shows ads.

### Which is updated more often, Rubjoy or SyncFree?

Rubjoy ships an update every 6 months, and SyncFree every 8 months. Most recently, Rubjoy was updated on October 7, 2026 and SyncFree on September 23, 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.*