Merge Object Viewer vs EarthProject
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Merge Object Viewer
Explore hundreds of 3D digital teaching aids with this app. Students can interact with models of rocks, mammals, cells, and more. The app also allows users to upload and view their own 3D objects on a compatible device.
- Hundreds of 3D teaching aids
- Interactive 3D models
- Learn about science and biology
- Upload and view custom 3D objects
- Hands-on digital learning
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PLEASE NOTE: This app requires a Merge Cube and a smartphone or a tablet to play. To find out how to get a Merge Cube and to learn more, visit our website at: https://www.MergeCube.com. Object Viewer puts hundreds of digital teaching aids in the palm of your hand! Students can learn about rocks and minerals, mammals, reptiles, lifecycles, cells, and so much more using different collections of hands-on 3D models. Students can also upload, view, and share their own 3D objects on the Merge Cube. If you have any questions or suggestions, we would love 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
EarthProject
Learn and get motivated to reduce your carbon and plastic footprint. This educational app provides tools and encouragement for sustainable living.
- Learn waste reduction techniques
- Motivation for sustainable living
- Carbon footprint tracking
- Plastic waste reduction guidance
- Educational content
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The EarthProject app will teach you and motivate you to reduce your carbon and plastic waste!
Screenshots
Verdict
The clearest difference is rating: Merge Object Viewer at 4.5 against EarthProject's 3.0. Merge Object Viewer also leads on ratings volume (390 vs 4). EarthProject's advantage is in-app purchases (none vs 4) and review sentiment (60% vs 48%). On price, update cadence, 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 Object Viewer sells 4 in-app purchases, starting at $9.99 per month. EarthProject asks for nothing beyond the download.
Merge Object Viewer holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Merge Object Viewer has 390 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 48% of Merge Object Viewer's written reviews are positive against 60% of EarthProject's, so the app with the better star average is not the one people write more warmly about.
Merge Object Viewer ships an update monthly, EarthProject every 3 weeks. The most recent releases landed on August 12, 2026 and June 1, 2026 respectively.
| Parameter | Merge Object Viewer | EarthProject |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (390 ratings) — better | 3.0 (4 ratings) |
| Positive reviews | 48.1% of reviews | 60.0% of reviews — better |
| Number of ratings | 390 — better | 4 |
| Update frequency | Monthly | Every 3 weeks — 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 | 12.0 — better |
| Further details — not scored | ||
| Size | 414 MB | 93 MB |
| Age rating | 4+ | 4+ |
| Developer | Merge Apps | TAKE ACTION GLOBAL Inc |
Customer experience
Merge Object Viewer
EarthProject
Bugs and requests
Merge Object Viewer
Reported bugs
4 issues- Objects not loading or displaying incorrectly
- App freezing or closing unexpectedly
- Labeling/annotation issues with 3D objects
- Compatibility problems on iPads and older iOS versions
Requested features
5 requests- Adjustable lighting for 3D objects
- Ability to snap objects together
- Camera button for capturing scenes
- Restore VR support
- More free 3D content options
EarthProject
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Merge Object Viewer
- Object Viewer Premium Monthly14 Days trial$9.991 Month
- Merge EDU Individual14 Days trial$9.991 Month
- Object Viewer Premium Annual14 Days trial$99.991 Year
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- Merge EDU Individual14 Days trial$99.991 Year
EarthProject
No in-app purchases
Questions
Is Merge Object Viewer free?
Is EarthProject free?
Which has better reviews, Merge Object Viewer or EarthProject?
Do Merge Object Viewer or EarthProject have ads?
Which is updated more often, Merge Object Viewer or EarthProject?
Other comparisons
