# iM.Master vs Reobrix

The clearest difference is update cadence: iM.Master at every 2 months against Reobrix's every 5 months. Reobrix's advantage is iOS requirement (11.0 vs 15.6). 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.

iM.Master ships an update every 2 months, Reobrix every 5 months. The most recent releases landed on October 1, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | iM.Master | Reobrix |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (90 ratings)](https://appshunter.io/ios/app/immaster/id1605106520/reviews)** | — |
| Number of ratings | **90** | — |
| Positive reviews | 47.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 25 MB | 27 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [卓挺 杜](https://appshunter.io/developer/628442211) | [植川 马](https://appshunter.io/developer/1783803021) |

## What reviewers say

### iM.Master

[App page](https://appshunter.io/ios/app/immaster/id1605106520)

Control building block robots with various intuitive methods. Explore fun through conventional key controls, gravity sensing, line drawing, and action programming.

**Highlights:** Conventional key remote control, Gravity sensing control, Line drawing remote control, Action programming control, Multiple control styles

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Reobrix

[App page](https://appshunter.io/ios/app/reobrix/id1638712970)

**In-app purchases:** none


## Frequently asked questions

### Is iM.Master free?

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

### Is Reobrix free?

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

### Do iM.Master or Reobrix have ads?

Neither iM.Master nor Reobrix shows ads.

### Which is updated more often, iM.Master or Reobrix?

iM.Master ships an update every 2 months, and Reobrix every 5 months. Most recently, iM.Master was updated on October 1, 2026 and Reobrix on October 4, 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.*