# iM.Master vs XP Block

The clearest difference is review sentiment: iM.Master at 47% against XP Block's 0%. iM.Master also leads on ratings volume (90 vs 3). XP Block's advantage is rating (3.0 vs 2.8) and iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

XP Block holds the better App Store score, 3.0 against 2.8. That said, the two scores are not equally well evidenced: iM.Master has 90 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 47% of iM.Master's written reviews are positive against 0% of XP Block's, so the app with the better star average is not the one people write more warmly about.

iM.Master ships an update every 2 months, XP Block every 4 months. The most recent releases landed on September 22, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | iM.Master | XP Block |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (90 ratings)](https://appshunter.io/ios/app/immaster/id1605106520/reviews) | **[3.0 (3 ratings)](https://appshunter.io/ios/app/xp-block/id6443748940/reviews)** |
| Number of ratings | **90** | 3 |
| Positive reviews | **47.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 25 MB | 33 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [卓挺 杜](https://appshunter.io/developer/628442211) | [世沈 黄](https://appshunter.io/developer/1580532937) |

## 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


### XP Block

[App page](https://appshunter.io/ios/app/xp-block/id6443748940)

This app offers multiple control modes for building blocks, including remote, voice, and gyroscope control. It also features DIY graphic programming and path modes to develop hands-on ability and programming thinking.

**Highlights:** Remote control mode, Voice control mode, Gyroscope control mode, DIY graphic programming, Path mode, Develops hands-on ability, Develops programming thinking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iM.Master free?

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

### Is XP Block free?

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

### Which has better reviews, iM.Master or XP Block?

XP Block is rated higher. iM.Master averages 2.8 out of 5 from 90 ratings, while XP Block averages 3.0 from 3 ratings.

### Do iM.Master or XP Block have ads?

Neither iM.Master nor XP Block shows ads.

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

iM.Master ships an update every 2 months, and XP Block every 4 months. Most recently, iM.Master was updated on September 22, 2026 and XP Block on September 16, 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.*