# 3D Model Viewer vs Sponge Microgrids

The clearest difference is in-app purchases: Sponge Microgrids at none against 3D Model Viewer's 1. Sponge Microgrids also leads on iOS requirement (13.0 vs 15.6). 3D Model Viewer's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 3D Model Viewer sells 1 one-off in-app purchase. Sponge Microgrids asks for nothing beyond the download.

3D Model Viewer ships an update weekly, Sponge Microgrids every 5 weeks. The most recent releases landed on October 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 3D Model Viewer | Sponge Microgrids |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (361 ratings)](https://appshunter.io/ios/app/3d-model-viewer-ar-and-print/id1631145223/reviews)** | — |
| Number of ratings | **361** | — |
| Positive reviews | 20.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 25 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.](https://appshunter.io/developer/867175889) | [Sponge Microgrids](https://appshunter.io/developer/1883101288) |

## What reviewers say

### 3D Model Viewer

[App page](https://appshunter.io/ios/app/3d-model-viewer-ar-and-print/id1631145223)

Explore and interact with 3D models on your mobile device. Simulate the 3D printing process to identify potential issues before committing to a print. Visualize your models in augmented reality, adjusting scale and rotation within your real-world environment.

**Highlights:** View 3D models in real-time, Rotate, zoom, and paint models, Simulate 3D printing process, View models in AR mode, Adjust scale and rotation in AR, Supports multiple 3D file formats

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Model Viewer Premium | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 👍 Nice app design
- 👍 Simple and well-designed
- 👍 Quick viewing of models
- 👍 Low app size

**What reviewers complain about**

- 👎 Only one free model import
- 👎 Paywall for more models
- 👎 Models shown at incorrect scale
- 👎 App crashes frequently
- 👎 Limited free version

**Reported bugs**

- App crashes immediately after upload
- App crashes when importing PLY files
- App crashes after payment
- App crashes when importing large files
- App crashes on iPad Pro

**Requested features**

- Allow changing background color
- Allow changing lighting positions
- Add axis lock object rotation
- Add way to rotate side to side (turntable)
- Option to slow down rotation/movements


### Sponge Microgrids

[App page](https://appshunter.io/ios/app/sponge-microgrids/id6760194035)

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

**In-app purchases:** none


## Frequently asked questions

### Is 3D Model Viewer free?

3D Model Viewer is free to download, with in-app purchases available.

### Is Sponge Microgrids free?

Sponge Microgrids is free to download, with no in-app purchases.

### Do 3D Model Viewer or Sponge Microgrids have ads?

Neither 3D Model Viewer nor Sponge Microgrids shows ads.

### Which is updated more often, 3D Model Viewer or Sponge Microgrids?

3D Model Viewer ships an update weekly, and Sponge Microgrids every 5 weeks. Most recently, 3D Model Viewer was updated on October 25, 2026 and Sponge Microgrids on October 5, 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.*