RoboFellow vs Merge Explorer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RoboFellow
This app allows users to control LEGO MINDSTORMS robots using a drag-and-drop block coding interface. It is designed for children aged 10 and above to engage with robotics and programming concepts.
- Control LEGO MINDSTORMS robots
- Drag-and-drop block coding
- Educational engagement for children
- Robotics programming
- Targeted for ages 10+
Read full descriptionHide full description
RoboFellow is an app that controls LEGO® MINDSTORMS and more The learner controls LEGO® MINDSTORMS® by using drag-and-drop blockly codes. RoboFellow is a member of RoboGarden's family of applications that target engagement among children of age 10+. -DISCLAIMER- "RoboFellow Lego EV3 Controller Program" is an app for fans of Lego EV3 and is intended to be used for informational and educational purposes only. "RoboFellow - Unofficial Lego EV3 Controller Program" is not licensed by, endorsed by, or associated with Lego.
Merge Explorer
Explore over 100 interactive science simulations using a smartphone and a Merge Cube. Investigate volcanoes, sharks, the solar system, and more with hands-on activities and quizzes. Ideal for K-8 students learning science at school or home.
- Over 100 science simulations
- Interactive Merge Cube experiences
- Hands-on learning activities
- Built-in quizzes
- NGSS-aligned K-8 curriculum
- Physical, Life, and Earth/Space Science topics
Read full descriptionHide full description
PLEASE NOTE: This app requires a Merge Cube and a smartphone or a tablet to experience. Find out how to get a Merge Cube and learn more at: https://www.MergeCube.com. Students can learn science effectively with over 100 science simulations they can touch, hold and interact with! Merge Explorer (along with a Merge Cube) allows students to investigate a smoking volcano in the palm of their hand, examine a great white shark up close, hold and explore the solar system, dissect a frog (humanely!), and so much more. With easy-to-follow activities and built-in quizzes, students gain key knowledge while immersed in learning, both in the classroom or while remote learning at home. Merge Explorer includes NGSS-aligned topics for K-8th grade, like Physical Science, Life Science, and Earth & Space Science. If you have any questions or suggestions, we want to hear from you! Contact us at any time at support@mergeedu.com. Privacy Policy: https://MergeEdu.com/privacy-policy Terms of Use: https://MergeEdu.com/terms-of-use
Screenshots
Verdict
The clearest difference is rating: Merge Explorer at 4.1 against RoboFellow's 3.0. Merge Explorer also leads on ratings volume (279 vs 4). RoboFellow's advantage is in-app purchases (none vs 4) and update cadence (every 3 days vs monthly). 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. Merge Explorer sells 4 in-app purchases, starting at $9.99 per month. RoboFellow asks for nothing beyond the download.
Merge Explorer holds the better App Store score, 4.1 against 3.0. That said, the two scores are not equally well evidenced: Merge Explorer has 279 ratings behind it against 4, so its average is the more settled of the two.
RoboFellow ships an update every 3 days, Merge Explorer monthly. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.
| Parameter | RoboFellow | Merge Explorer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) | 4.1 (279 ratings) — better |
| Positive reviews | — | 46.2% of reviews |
| Number of ratings | 4 | 279 — better |
| Update frequency | Every 3 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 60 MB | 1.3 GB |
| Age rating | 4+ | 4+ |
| Developer | RoboGarden Inc. | Merge Apps |
Customer experience
RoboFellow
Merge Explorer
Bugs and requests
RoboFellow
Not enough reviews yet to summarise bugs or requests.
Merge Explorer
Reported bugs
13 issues- App crashes on iPad
- App crashes when pressing play
- Camera not working in app
- Black screen when using cube or camera
- VR function broken
Show 8 moreShow fewer
- VR doesn't work with iPhone XS Max
- App crashes or loads forever
- Problems with galactic explore
- App has trouble recognizing the cube
- Screen recording only records cube, not overlay
- Words appear sideways in horizontal mode
- Content appears incorrectly
- App crashes
Requested features
9 requests- Make the app free to play
- Add more fun things, not just learning
- Bring back the fun apps (time bomb, block courses)
- Allow users to create their own games for the merge cube
- Add a way to reset quizzes for class sets of devices
Show 4 moreShow fewer
- Improve functionality for remote teaching, including screen recording
- Add more content in the future
- Add dark mode option
- Add advanced analytics dashboard
In-app purchases
RoboFellow
No in-app purchases
Merge Explorer
- Merge EDU Individual14 Days trial$9.991 Month
- Explorer Premium Monthly14 Days trial$9.991 Month
- Merge EDU Individual14 Days trial$99.991 Year
Show 1 moreShow fewer
- Explorer Premium Annual14 Days trial$99.991 Year
Questions
Is RoboFellow free?
Is Merge Explorer free?
Which has better reviews, RoboFellow or Merge Explorer?
Do RoboFellow or Merge Explorer have ads?
Which is updated more often, RoboFellow or Merge Explorer?
Other comparisons
