mozaik3D vs Open Roberta Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
mozaik3D
This app makes learning engaging with over 1300 interactive 3D scenes covering history, science, math, and more. It offers digital lessons, quizzes, and narration to enhance understanding. Explore worlds in walk or VR mode, and practice languages with multi-language support.
- 1300+ interactive 3D scenes
- Digital lessons, images, videos, audio
- Quizzes and activities
- Narrations and animations
- Walk mode & VR mode
- Multi-language support
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Let’s make learning fun! mozaik3D brings learning to life with interactive 3D models and a wide variety of digital resources. Perfect for students, teachers, and anyone curious about the world! - Explore 1300+ interactive 3D scenes across history, science, technology, mathematics, arts and more. - Digital lessons, images, videos, audio, and tools — everything you need for a richer learning experience. - Quizzes and activities to test knowledge in a fun way. - Narrations and animations to guide you through complex topics. - Walk mode & VR mode — step inside ancient cities, explore the human body, or travel to outer space. mozaik3D is available in over 40 languages, making it a perfect companion for both learning and practicing foreign languages. Try the app for free: explore demo scenes without registration, or create a free account and unlock 5 educational 3D scenes every week. Turn learning into an adventure — anytime, anywhere!
Open Roberta Mobile
Visually program robots and microcontrollers using a drag-and-drop interface. Wirelessly transfer your creations to compatible hardware like LEGO Education WeDo 2.0 via Bluetooth. Explore a gallery of shared programs and access live coding help.
- Visual programming language (NEPO®)
- Robot and microcontroller control
- Wireless Bluetooth transfer
- Program sharing gallery
- Live coding help
- Multi-language support
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Code and play – welcome to the Open Roberta Lab, where you bring robots and microcontrollers to life. By “dragging and dropping” the visual programming language NEPO® you can quickly and playfully create programs for different systems, e.g. the LEGO® Education WeDo 2.0. The “Open Roberta mobile” app enables you to transfer your NEPO programs to the WeDo 2.0 wirelessly via Bluetooth – no matter whether you are using a smartphone or a tablet. Open Roberta comes with many extras • One programming language for many robots • Gallery for sharing programs • Live help for a quick introduction to coding • Source view • Various languages for users worldwide • And many more
Screenshots
Verdict
The clearest difference is rating: mozaik3D at 4.2 against Open Roberta Mobile's 1.7. mozaik3D also leads on ratings volume (141 vs 3). Open Roberta Mobile's advantage is in-app purchases (none vs 2) and update cadence (every 2 days vs every 5 weeks). On price, ads and device support 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. mozaik3D sells 2 one-off in-app purchases. Open Roberta Mobile asks for nothing beyond the download.
mozaik3D holds the better App Store score, 4.2 against 1.7. That said, the two scores are not equally well evidenced: mozaik3D has 141 ratings behind it against 3, so its average is the more settled of the two.
mozaik3D ships an update every 5 weeks, Open Roberta Mobile every 2 days. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.
| Parameter | mozaik3D | Open Roberta Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (141 ratings) — better | 1.7 (3 ratings) |
| Positive reviews | 58.3% of reviews | — |
| Number of ratings | 141 — better | 3 |
| Update frequency | Every 5 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.3 — better |
| Further details — not scored | ||
| Size | 447 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | MOZAIK Education Ltd. | Fraunhofer |
Customer experience
mozaik3D
Open Roberta Mobile
Bugs and requests
mozaik3D
Reported bugs
56 issues- Login fails, password incorrect
- Cannot register, country/data not accepted
- Account not working after registration
- Adrenaline (advanced) scene shows error
- Audio cuts off in Human body (male) scene
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- Opening a book freezes the app
- App says internet connection needed when WiFi is on
- Overlay menu hides 3D animation on iPad
- No sound in animations
- Cannot register on iPhone browser (Safari/Chrome)
- App crashes constantly after update
- App doesn't load
- App doesn't open, internet access issues reported
- Cannot open some 3D scenes or books
- Cannot download videos, most are not free
- Cannot create a new account
- VR headset for phone doesn't work correctly
- Cannot open desired content
- Google and Facebook registration/login fails
- Favorite animation not added to collection
- Cannot make premium account
- VR headset for phone doesn't work correctly
- Cannot open desired content
- Google and Facebook registration/login fails
- Favorite animation not added to collection
- Cannot make premium account
- Cannot zoom
- App doesn't support iPhone 5s, loads forever
- Login cursor jumps to password field
- Constant switching between portrait and landscape
- Loaded 3D animations not opening in app on iPadOS 13
- Error when opening app, cloud symbol loads and errors
- App crashes continuously on iPad 2018
- App crashes on iPad Air 2nd generation
- App freezes on iPhone XR
- App logs out immediately after logging in on iPad
- Login error, incorrect data reported
- Password not accepted during registration
- Authorization error, cannot watch 3D models
- App closes user session
- App keeps kicking user out
- App keeps logging user out
- User login required for every event even after logging in
- App is unusable after password change
- App crashes continuously
- Downloads get stuck around 60%
- App takes a long time to open
- Premium account is a problem to use
- App is not working after update
- App not working on iPad Air and iPhone X
- Cannot open app after installation
- Login issues, password incorrect
- App crashes
- App is slow and lags
- App requires login for most content
- App is not an animation tool, just for watching
Requested features
10 requests- Update lymphatic system scene with 3D cross-sections
- Add 3D scene about domestic cat
- Add 3D scene about digestive system
- Add narration for better understanding
- More topics for small kids (plants, flowers, animals)
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- Allow users to take notes
- More free content or better premium access
- Improve exercises to align with scene content
- Add more subjects/topics
- Improve creative approach and details in animations
Open Roberta Mobile
Not enough reviews yet to summarise bugs or requests.
In-app purchases
mozaik3D
- Mozaik STUDENT - (1 Year)$44.99
- Mozaik TEACHER - (1 Year)$119.99
Open Roberta Mobile
No in-app purchases
Questions
Is mozaik3D free?
Is Open Roberta Mobile free?
Which has better reviews, mozaik3D or Open Roberta Mobile?
Do mozaik3D or Open Roberta Mobile have ads?
Which is updated more often, mozaik3D or Open Roberta Mobile?
Other comparisons
