iM.Master vs LEGO® SMART Assist
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iM.Master
Control building block robots with various intuitive methods. Explore fun through conventional key controls, gravity sensing, line drawing, and action programming.
- Conventional key remote control
- Gravity sensing control
- Line drawing remote control
- Action programming control
- Multiple control styles
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iM.Master.It contains a variety of control modes with different styles, including: conventional key remote control, gravity sensing, line drawing remote control, action programming control and other modes, so that you can experience different fun!
LEGO® SMART Assist
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.
- 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
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LEGO® SMART Assist App: The Official Companion App for LEGO® SMART Play™ Sets. LEGO SMART Assist App is the companion app for adults to manage and maximise the potential of LEGO SMART Bricks. It helps you control SMART Brick settings, update new play features, and get quick help when you need it. An app for grown-ups to get the most out of the SMART Play ™ experience, so kids can keep building and exploring. The SMART Assist app gives you access to: - Effortless Onboarding to manage your SMART Bricks - Guidance and support to get started with your SMART Play™ sets - New play feature updates to get the latest SMART Play™ experience Effortless Onboarding: · Register your SMART Brick: Connect and register your SMART Bricks to your adult LEGO Account quickly and easily. · SMART Brick status: See everything you need to know about your SMART Bricks including battery level and available updates · Custom Controls: Easily set a unique name for your SMART Bricks and manage the volume controls. · Play rules! Your SMART Bricks will only connect to the app when they are on the charger - so playtime stays interruption-free! Guidance and support Get started with your SMART Play™ sets and access help and support if you need it · FAQs and videos: Access FAQs and video tutorials to help you get started, learn about charging and find out more about the SMART Assist App · Customer support: Still need help? Link directly to our Consumer Services site on LEGO.com for further help and support · LEGO® Builder App: Easily link to the Builder App for building instructions · And more! Link directly to LEGO.com for more information about the LEGO® SMART Play™ system New play feature updates: Keep your SMART Bricks up to date to benefit from the latest play experiences · Seamless Updates: Download and install the latest updates for your SMART Bricks. · Stay Informed: Receive in-app and push notifications whenever a new update is available. · New Play Experiences: Get timely updates for your SMART Bricks and unlock new play experiences. Privacy and Settings · For Grown-ups: The app is designed for grown-ups to get the most out of the SMART Play experience, so that kids can keep on playing. Underage users attempting access will be advised that an adult is needed · Data Consent: Manage your consent for data collection for both app analytics and brick telemetry data. Our Data Privacy Officer can be contacted if you want to retrieve or erase what has been collected. App Preferences: Configure app settings, including sound, haptics and notification toggles. LEGO, the LEGO Group, the Minifigure and the SMART PLAY logo are trademarks of the LEGO Group.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | iM.Master | LEGO® SMART Assist |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (92 ratings) | 3.8 (42 ratings) — better |
| Positive reviews | 47.2% of reviews | 57.7% of reviews — better |
| Number of ratings | 92 — better | 42 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 362 MB |
| Age rating | 4+ | 4+ |
| Developer | 卓挺 杜 | LEGO |
Customer experience
iM.Master
LEGO® SMART Assist
In-app purchases
iM.Master
No in-app purchases
LEGO® SMART Assist
No in-app purchases
Questions
Is iM.Master free?
Is LEGO® SMART Assist free?
Which has better reviews, iM.Master or LEGO® SMART Assist?
Do iM.Master or LEGO® SMART Assist have ads?
Which is updated more often, iM.Master or LEGO® SMART Assist?
Other comparisons
