Comparison

3D Model Viewer vs STL Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

3D Model Viewer

Easily view and interact with 3D models in various formats like USDZ, STL, and OBJ. Explore your designs with intuitive gestures, high-performance rendering, and augmented reality capabilities. Record animations of your models for sharing.

Highlights
  • View USDZ, STL, OBJ, PLY files
  • Intuitive gesture controls
  • High-performance rendering
  • Augmented Reality (AR) visualization
  • Record rotation animations
  • Supports OBJ with textures
Read full description

3D Model Viewer: STL & USDZ - Transform Your Experience with 3D Visualization! Key Features: - Seamless Viewing: Effortlessly open and explore .usdz, .usd, .obj, .stl, .ply files with stunning clarity and detail. Experience 3D models like never before! - User-Friendly Interface: Navigate through your 3D models with simple gestures. Rotate, zoom and pan. - High Performance: Enjoy smooth and fast rendering, ensuring an optimal viewing experience for complex models. - AR Viewer: Visualize your models in AR. - Record: Record the scene with a rotation animation. You can upload .obj with textures, you need to create a zip file with the textures and the .mtl file. Download 3D Model Viewer: STL & USDZ today and step into the future of 3D visualization! Transform the way you see and share your creative ideas. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. - Terms & conditions https://sites.google.com/view/usdz3dviewer/home/termsandconditions

About

STL Viewer

View, explore, and edit 3D models on your iPhone or iPad. Basic viewing is included with purchase, with optional upgrades for advanced creation, editing, and reporting features. Models are processed locally for privacy.

Highlights
  • Open and view STL files
  • Rotate, pan, and zoom models
  • Basic model information inspection
  • Create and edit 3D models
  • Measure distances and angles
  • Export to multiple file formats
  • Generate local PDF reports
Features
Read full description

Open your STL file on iPhone or iPad and examine the model with rotation, zoom and technical views. Your app purchase includes basic viewing without a subscription. Pro and Studio are optional upgrades for creation, editing, inspection and reports. BASIC VIEWER Open binary or ASCII STL files. Orbit, pan and zoom, switch camera views, and inspect basic model information in solid or wireframe mode. PRO WORKSPACE Build with primitives and profiles; extrude and revolve shapes. Transform objects, preview Boolean operations and plane cuts, and use mesh repair tools. Organize multiple objects in local projects with undo, redo and saved revisions. Measure distances, angles and radii, and inspect sampled estimates of wall thickness and surface deviation. Export STL, OBJ, PLY, 3MF and GLB files, capture PNG images, and opt into project reminders. STUDIO REPORTS Studio includes Pro and adds local PDF reports with project information, geometry summaries and inspection annotations. IMPORTANT LIMITS Models are processed on your device, not uploaded to our servers. Projects and revisions are local. This app does not include cloud collaboration, SSO, STEP/B-rep CAD or manufacturing certification. Thickness and surface comparisons are sampled estimates, not certified measurements. File formats and mesh operations have safety limits and restrictions shown in the tools. STL does not record units; choose the correct unit for your model. OPTIONAL PLANS The app download is paid. Basic viewing needs no subscription. Creation, editing and advanced inspection require Pro or Studio; PDF reports require Studio. Monthly/annual subscriptions and Pro Lifetime are optional. The App Store displays prices and periods before purchase. Subscriptions renew automatically until cancelled in your Apple account settings. Restore Purchases is available in the app. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://softwareideal.com.br/policy.html Support: https://softwareideal.com.br

Screenshots

3D Model Viewer4 screens
STL Viewer2 screens

Verdict

The call

The clearest difference is review sentiment: STL Viewer at 100% against 3D Model Viewer's 0%. STL Viewer also leads on rating (5.0 vs 3.5). 3D Model Viewer's advantage is price (Free vs $0.99) and update cadence (weekly vs every 4 weeks). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

3D Model Viewer is free to download; STL Viewer costs $0.99 up front. 3D Model Viewer sells 4 in-app purchases, starting at $2.99 per 7 days and STL Viewer sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

STL Viewer holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: 3D Model Viewer has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of 3D Model Viewer's written reviews are positive against 100% of STL Viewer's.

UpkeepUpdate frequency

3D Model Viewer ships an update weekly, STL Viewer every 4 weeks. Both last shipped on November 3, 2026.

Scorecard6 real differences · 4 level
3D Model Viewer versus STL Viewer: the parameters behind the verdict, then further details
Parameter3D Model ViewerSTL Viewer
PriceFree — better$0.99
Rating3.5 (11 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings11 — better1
Update frequencyWeekly — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size15 MB5 MB
Age rating4+4+
DeveloperAriel OrtizFelipe Marques de Barros

Customer experience

3D Model Viewer

All ratings11 ratings
Positive63.6%
Neutral0.0%
Negative36.4%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

STL Viewer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

3D Model Viewer

Subscriptions3
  • All Access$2.997 Days
  • All Access3 Days trial$3.991 Month
  • All Access$14.991 Year
One-time1
  • One-time payment$3.99
5 purchases

STL Viewer

Subscriptions4
  • STL Viewer Pro Mensal$2.991 Month
  • STL Viewer Studio Mensal$5.991 Month
  • STL Viewer Pro Anual$22.991 Year
Show 1 more
  • STL Viewer Studio Anual$49.991 Year
One-time1
  • STL Viewer Pro Vitalício$39.99

Questions

Is 3D Model Viewer free?
3D Model Viewer is free to download, with in-app purchases available.
Is STL Viewer free?
STL Viewer costs $0.99, and also offers in-app purchases.
Which has better reviews, 3D Model Viewer or STL Viewer?
STL Viewer is rated higher. 3D Model Viewer averages 3.5 out of 5 from 11 ratings, while STL Viewer averages 5.0 from 1 ratings.
Do 3D Model Viewer or STL Viewer have ads?
Neither 3D Model Viewer nor STL Viewer shows ads.
Which is updated more often, 3D Model Viewer or STL Viewer?
3D Model Viewer ships an update weekly, and STL Viewer every 4 weeks. Most recently, 3D Model Viewer was updated on November 3, 2026 and STL Viewer on November 3, 2026.

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