LEGO® Builder vs The O App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LEGO® Builder
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.
- 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
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LEGO® Builder is the official building instructions app for LEGO® sets that guides you on an easy, fun, and collaborative digital building adventure. Build your set like never before: - Step into a new way of building with an intuitive 3D building experience that lets you zoom, rotate, and view LEGO® sets from every angle. - Use step-by-step digital building instructions to see each brick clearly and bring your set to life with confidence. Build Together with friends and family! - Build Together is a fun, social building experience designed for multiple builders to work together. - You can team up and divide tasks to complete your LEGO® set as a group - perfect for fun social family nights, birthdays, or holidays like Valentine’s Day, Easter, Mother’s Day, Father’s Day or Christmas. - Share a PIN code to join as a host or builder, take turns completing building steps, and collaborate to finish the model together. - Check in the app to see if your LEGO® set can be built using the Build Together feature. Discover thousands of LEGO® instructions - Explore a digital library of LEGO® building instructions from 2000 to today. - Search by set name or number, or scan the QR code on your instruction manual to open it instantly in the app. Follow a story as you build - Unlock enriched content and guided building experiences for select LEGO® themes, bringing extra fun and imagination to your 3D building journey. Unlock more with a LEGO® Account - Save your progress, build a digital collection of your LEGO® sets, and track your total number of bricks. - Pick up right where you left off - anytime, anywhere. Track your building journey - Now you can keep a record of your completed sets, see your total bricks built, and celebrate your progress as a LEGO® Builder. Things to keep in mind - You’ll need a stable internet connection to use this app. We’re always adding new digital building instructions so you can expand your collection, explore new sets, and find even more ways to build together. - Want to know if your set includes digital instructions or Build Together mode? Check in the app and start your collaborative adventure today! We're eager to hear how we can make the LEGO® Builder app even better for you! Please leave us your thoughts and recommendations in the reviews to help us make the LEGO® Builder app even better. LEGO, the LEGO logo, the Brick and Knob configurations, and the Minifigure are trademarks of the LEGO Group. © 2025 The LEGO Group.
The O App
Create your Academy Awards predictions and compete with friends. Track live results during the ceremony and see who has the best film knowledge in a clean, minimal interface. This app focuses on pure awards-season competition without any real money involved.
- Create Academy Awards ballots
- Compete with friends on leaderboards
- Track live ceremony results
- Compare predictions
- Minimalist interface
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The O App is the definitive Academy Awards ballot experience. Create your Oscars predictions, compete with friends, and follow awards night live in a beautifully minimal interface designed for film lovers. • Build and submit your Academy Awards ballot • Compete with friends on a live leaderboard • Track results in real time during the ceremony • Compare picks and see who knows film best No gambling. No real money. Just pure awards-season competition.
Screenshots
Verdict
The clearest difference is review sentiment: LEGO® Builder at 78% against The O App's 0%. LEGO® Builder also leads on rating (4.8 vs 1.0) and ratings volume (291K vs 3). The O App's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads, in-app purchases and monetization model 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® Builder holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: LEGO® Builder has 291K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 78% of LEGO® Builder's written reviews are positive against 0% of The O App's.
LEGO® Builder ships an update every 3 weeks, The O App every 3 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.
| Parameter | LEGO® Builder | The O App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (291K ratings) — better | 1.0 (3 ratings) |
| Positive reviews | 77.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 291K — better | 3 |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #95 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.2 |
| Further details — not scored | ||
| Size | 264 MB | 40 MB |
| Age rating | 4+ | 12+ |
| Developer | LEGO | BOBAN NAGRAISALOVIC |
Customer experience
LEGO® Builder
The O App
Bugs and requests
LEGO® Builder
Reported bugs
4 issues- 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
5 requests- 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
The O App
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LEGO® Builder
No in-app purchases
The O App
No in-app purchases









