3D Model Viewer vs Sponge Microgrids
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Model Viewer
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.
- 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
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Have you ever wanted to view and interact with 3D Models? 3D Model Viewer allows you to view compatible 3D Models using your mobile device. You can even simulate 3D Printing and view your model in AR mode! -- View 3D Models Import and view your 3D models in real time, rotating, zooming and painting! -- Simulate 3D Printing Watch a simulation of your model being 3D printed from bottom to top and identify any potential problems with the model without wasting any printing material! -- AR Mode View your 3D models inserted into the real world, being able to adjust scale and rotation! -- Compatible with many formats 3D Model Viewer supports the following formats: .stl, .obj*, .abc, .ply, .usdz, .usd, .usda, .dae *.obj files can be imported with textures in the format of a .zip file 3D Model Viewer is now available for all iOS devices!
Sponge Microgrids
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Use this app to connect to your EMC and track and fine tune its behavior.
Screenshots
Verdict
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.
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. 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.
| Parameter | 3D Model Viewer | Sponge Microgrids |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (361 ratings) — better | — |
| Positive reviews | 20.5% of reviews | — |
| Number of ratings | 361 — better | — |
| Update frequency | Weekly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA. | Sponge Microgrids |
Bugs and requests
3D Model Viewer
Reported bugs
10 issues- 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
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- VR crashes
- Model centering limits viewing
- Paint function assigns random color
- Incorrect AR sizing
- Y axis is up in AR
Requested features
11 requests- 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
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- Add arrange by recent for downloaded STLs
- Add ability to list most recent STL at top
- Allow models to scale larger in AR mode
- Add free rotation
- Improve AR sizing accuracy
- Use Z axis as up for AR and print sim
Sponge Microgrids
Not enough reviews yet to summarise bugs or requests.
In-app purchases
3D Model Viewer
- Model Viewer Premium$1.99
Sponge Microgrids
No in-app purchases
Questions
Is 3D Model Viewer free?
Is Sponge Microgrids free?
Do 3D Model Viewer or Sponge Microgrids have ads?
Which is updated more often, 3D Model Viewer or Sponge Microgrids?
Other comparisons
