3D Model Viewer vs STL Viewer · Model File Reader
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!
STL Viewer · Model File Reader
Quickly view and interact with 3D model files. Rotate, zoom, and project models into your environment using augmented reality. Offers customization options and multi-model support.
- Fast STL file viewing
- 3D model rotation and zoom
- Augmented Reality (AR) projection
- Customizable model and background colors
- Multi-model support
- Grid viewer and lighting options
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View your STL 3D model files at lightning speed. Instantly open even the most complex polygonal structures without delay. Rotate, zoom, change background and model color, multiple models reader, project your model into your home in real life with AR and see its dimensions and color harmony with your environment, grid viewer, lighting and much more. *Note: AR projection, multi models, ad-free and some premium customization features require PRO upgrade. Privacy Policy & Terms of Use (EULA): https://plusapkz.com/stl-viewer-model-file-reader/
Screenshots
Verdict
The clearest difference is rating: STL Viewer · Model File Reader at 5.0 against 3D Model Viewer's 4.4. 3D Model Viewer's advantage is ads (none vs shown) and ratings volume (364 vs 2). On price, update cadence, in-app purchases and monetization model 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 and STL Viewer · Model File Reader sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
STL Viewer · Model File Reader holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: 3D Model Viewer has 364 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 20% of 3D Model Viewer's written reviews are positive against 0% of STL Viewer · Model File Reader's, so the app with the better star average is not the one people write more warmly about.
3D Model Viewer ships an update weekly, STL Viewer · Model File Reader every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | 3D Model Viewer | STL Viewer · Model File Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (364 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 20.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 364 — better | 2 |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Vision Pro | iPhone, iPad, iPod, Mac |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA. | OMER FARUK KIZILTUG |
Customer experience
3D Model Viewer
STL Viewer · Model File Reader
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
STL Viewer · Model File Reader
Not enough reviews yet to summarise bugs or requests.
In-app purchases
3D Model Viewer
- Model Viewer Premium$1.99
STL Viewer · Model File Reader
- Weekly Premium3 Days trial$1.997 Days
- Monthly Pro3 Days trial$4.991 Month
- Yearly Pro$19.991 Year
Questions
Is 3D Model Viewer free?
Is STL Viewer · Model File Reader free?
Which has better reviews, 3D Model Viewer or STL Viewer · Model File Reader?
Do 3D Model Viewer or STL Viewer · Model File Reader have ads?
Which is updated more often, 3D Model Viewer or STL Viewer · Model File Reader?
Other comparisons
