# iM.Master vs Power Box

The clearest difference is rating: iM.Master at 2.8 against Power Box's 1.8. iM.Master also leads on review sentiment (47% vs 22%). On price, ratings volume, update cadence and ads 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 holds the better App Store score, 2.8 against 1.8. Both are backed by a comparable volume of ratings — 90 and 37 respectively. Written reviews point the same way: 47% of iM.Master's written reviews are positive against 22% of Power Box's.

iM.Master ships an update every 2 months, Power Box every 6 weeks. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | iM.Master | Power Box |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (90 ratings)](https://appshunter.io/ios/app/immaster/id1605106520/reviews)** | [1.8 (37 ratings)](https://appshunter.io/ios/app/power-box/id1613357195/reviews) |
| Number of ratings | **90** | 37 |
| Positive reviews | **47.1% of reviews** | 21.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 25 MB | 27 MB |
| Requires iOS | 15.6 | **15.0** |
| 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


### Power Box

[App page](https://appshunter.io/ios/app/power-box/id1613357195)

Control a building block car's motor rotation via Bluetooth commands. Offers remote control, gyroscope, path, and voice modes for interactive play. Requires Bluetooth authorization.

**Highlights:** Bluetooth motor control, Remote control mode, Gyroscope mode, Path mode, Voice control mode

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

**In-app purchases:** none


## Frequently asked questions

### Is iM.Master free?

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

### Is Power Box free?

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

### Which has better reviews, iM.Master or Power Box?

iM.Master is rated higher. iM.Master averages 2.8 out of 5 from 90 ratings, while Power Box averages 1.8 from 37 ratings.

### Do iM.Master or Power Box have ads?

Neither iM.Master nor Power Box shows ads.

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

iM.Master ships an update every 2 months, and Power Box every 6 weeks. Most recently, iM.Master was updated on September 22, 2026 and Power Box on September 19, 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.*