# iM.Master vs LEGO® SMART Assist

The clearest difference is rating: LEGO® SMART Assist at 3.8 against iM.Master's 2.9. LEGO® SMART Assist also leads on review sentiment (58% vs 47%). 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.

LEGO® SMART Assist holds the better App Store score, 3.8 against 2.9. Both are backed by a comparable volume of ratings — 92 and 42 respectively. Written reviews point the same way: 47% of iM.Master's written reviews are positive against 58% of LEGO® SMART Assist's.

iM.Master ships an update every 2 months, LEGO® SMART Assist monthly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | iM.Master | LEGO® SMART Assist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (92 ratings)](https://appshunter.io/ios/app/immaster/id1605106520/reviews) | **[3.8 (42 ratings)](https://appshunter.io/ios/app/lego-smart-assist/id6756261090/reviews)** |
| Number of ratings | **92** | 42 |
| Positive reviews | 47.2% of reviews | **57.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 25 MB | 362 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [卓挺 杜](https://appshunter.io/developer/628442211) | [LEGO](https://appshunter.io/developer/347363505) |

## 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


### LEGO® SMART Assist

[App page](https://appshunter.io/ios/app/lego-smart-assist/id6756261090)

This app serves as a companion for adults managing LEGO SMART Bricks. It allows for effortless onboarding, provides guidance and support, and enables seamless updates for new play features. Designed for grown-ups to maximize the SMART Play experience.

**Highlights:** Effortless onboarding for SMART Bricks, Guidance and support for SMART Play sets, Seamless updates for new play features, Register and manage SMART Bricks, Access FAQs, video tutorials, and customer support, Link to LEGO Builder App and LEGO.com, Manage data consent and app preferences

**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 LEGO® SMART Assist free?

LEGO® SMART Assist is free to download, with no in-app purchases.

### Which has better reviews, iM.Master or LEGO® SMART Assist?

LEGO® SMART Assist is rated higher. iM.Master averages 2.9 out of 5 from 92 ratings, while LEGO® SMART Assist averages 3.8 from 42 ratings.

### Do iM.Master or LEGO® SMART Assist have ads?

Neither iM.Master nor LEGO® SMART Assist shows ads.

### Which is updated more often, iM.Master or LEGO® SMART Assist?

iM.Master ships an update every 2 months, and LEGO® SMART Assist monthly. Most recently, iM.Master was updated on November 3, 2026 and LEGO® SMART Assist on November 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.*