# LEGO® Builder vs INNOBOT MASTER KIT

The clearest difference is update cadence: LEGO® Builder at every 3 weeks against INNOBOT MASTER KIT's every 4 months. LEGO® Builder also leads on chart position (#109 vs unranked). INNOBOT MASTER KIT's advantage is iOS requirement (13.0 vs 15.1). 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.

LEGO® Builder ships an update every 3 weeks, INNOBOT MASTER KIT every 4 months. The most recent releases landed on October 31, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | LEGO® Builder | INNOBOT MASTER KIT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (290K ratings)](https://appshunter.io/ios/app/lego-builder-3d-instructions/id1486159728/reviews)** | — |
| Number of ratings | **290K** | — |
| Positive reviews | 77.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Best chart rank | **#109** | — |
| Size | 264 MB | 88 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LEGO](https://appshunter.io/developer/347363505) | [Amazing Toys Limited](https://appshunter.io/developer/1590744188) |

## What reviewers say

### LEGO® Builder

[App page](https://appshunter.io/ios/app/lego-builder-3d-instructions/id1486159728)

**Currently charting:** #109 Top Free · Entertainment (US App Store)

This app provides interactive 3D building instructions for LEGO sets. It allows users to zoom, rotate, and view models from all angles, with step-by-step guidance. It also features a collaborative building mode for multiple users and a digital library of thousands of instruction manuals.

**Highlights:** Interactive 3D building instructions, Zoom, rotate, and view from all angles, Step-by-step digital guidance, Collaborative 'Build Together' mode, Digital library of thousands of instructions, Track building progress and brick count

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 👍 Helpful for building sets
- 🤖 Great 3D instructions
- 💡 Ability to save built sets
- 🎨 Organized by theme and year

**What reviewers complain about**

- 🐛 Crashes when using sticker steps
- 🔍 Missing instructions for older/retired sets
- 🔍 Incomplete set of instructions for newer sets
- 🔍 Difficult to navigate and find specific sets
- 🔍 Inability to add older sets to collection

**Reported bugs**

- Sets disappearing from collection after updates
- Inability to log in and save collection
- Slow loading and reloading of instructions
- Zoom and navigation issues on instructions

**Requested features**

- Add more older/retired sets
- Improve navigation and search functionality
- Allow adding of older sets to collection
- Implement wishlist feature
- Add more personalization options for profiles


### INNOBOT MASTER KIT

[App page](https://appshunter.io/ios/app/innobot-master-kit/id1590744186)

**In-app purchases:** none


## Frequently asked questions

### Is LEGO® Builder free?

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

### Is INNOBOT MASTER KIT free?

INNOBOT MASTER KIT is free to download, with no in-app purchases.

### Do LEGO® Builder or INNOBOT MASTER KIT have ads?

Neither LEGO® Builder nor INNOBOT MASTER KIT shows ads.

### Which is updated more often, LEGO® Builder or INNOBOT MASTER KIT?

LEGO® Builder ships an update every 3 weeks, and INNOBOT MASTER KIT every 4 months. Most recently, LEGO® Builder was updated on October 31, 2026 and INNOBOT MASTER KIT on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*