# Merge Object Viewer vs MARVLS AR for Physics 2

The clearest difference is in-app purchases: MARVLS AR for Physics 2 at none against Merge Object Viewer's 4. Merge Object Viewer's advantage is update cadence (monthly vs every 4 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Merge Object Viewer sells 4 in-app purchases, starting at $9.99 per month. MARVLS AR for Physics 2 asks for nothing beyond the download.

Merge Object Viewer ships an update monthly, MARVLS AR for Physics 2 every 4 months. The most recent releases landed on October 22, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Merge Object Viewer | MARVLS AR for Physics 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (389 ratings)](https://appshunter.io/ios/app/merge-object-viewer/id1367544362/reviews)** | — |
| Number of ratings | **389** | — |
| Positive reviews | 47.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 414 MB | 247 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Merge Apps](https://appshunter.io/developer/1253049593) | [Michele McColgan](https://appshunter.io/developer/1532617986) |

## What reviewers say

### Merge Object Viewer

[App page](https://appshunter.io/ios/app/merge-object-viewer/id1367544362)

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.

**Highlights:** Hundreds of 3D teaching aids, Interactive 3D models, Learn about science and biology, Upload and view custom 3D objects, Hands-on digital learning

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Object Viewer Premium Monthly | $9.99 | per month |
| Merge EDU Individual | $9.99 | per month |
| Object Viewer Premium Annual | $99.99 | per year |
| Merge EDU Individual | $99.99 | per year |

**What reviewers like**

- 🚀 Engaging AR STEM tool
- 👍 Intuitive interface
- 👍 Seamless object merging
- 👍 Extensive file format support
- 👍 Convenient sharing options

**What reviewers complain about**

- 🐛 Frequent crashes
- 🐛 Slow rendering/loading
- 🐛 Compatibility issues on older devices
- 🔒 Paywall for full access
- 🐛 Unstable login/account management

**Reported bugs**

- 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**

- Adjustable lighting for 3D objects
- Ability to snap objects together
- Camera button for capturing scenes
- Restore VR support
- More free 3D content options


### MARVLS AR for Physics 2

[App page](https://appshunter.io/ios/app/marvls-ar-for-physics-2/id6630392503)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Merge Object Viewer free?

Merge Object Viewer is free to download, with in-app purchases available.

### Is MARVLS AR for Physics 2 free?

MARVLS AR for Physics 2 is free to download, with no in-app purchases.

### Do Merge Object Viewer or MARVLS AR for Physics 2 have ads?

Neither Merge Object Viewer nor MARVLS AR for Physics 2 shows ads.

### Which is updated more often, Merge Object Viewer or MARVLS AR for Physics 2?

Merge Object Viewer ships an update monthly, and MARVLS AR for Physics 2 every 4 months. Most recently, Merge Object Viewer was updated on October 22, 2026 and MARVLS AR for Physics 2 on October 11, 2026.

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