Comparison

STL Simple 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

STL Simple Viewer

Easily view and interact with 3D STL CAD models. Supports various file types and offers advanced rendering options for detailed analysis. Get model information and explore interiors with clipping planes.

Highlights
  • View ASCII and Binary STL files
  • Load STL from ZIP
  • Rotate, pan, and zoom
  • Orthogonal and Perspective modes
  • Model info (triangle count, bounding box)
  • Rendering options (faces, edges, transparency)
  • Clipping plane for interiors
Features
Read full description

STL Simple Viewer is a great app to quickly view STL, 3MF & DXF 3D files and export them to the most commonly used CAD formats. Features: - Supports STL files both ASCII and Binary formats. - Supports 3MF & DXF files. - Load files directly from ZIP archives. - Export to DXF, OBJ, DAE, PLY, USD, STL & 3MF. - Measure distances between points within your model. - Rotate, pan, and zoom models with intuitive touch controls. - Configure rendering options: faces, edges, points, background and transparency. - Render using a clipping plane (useful for viewing model interiors). - View models in Orthographic or Perspective mode. - Obtain model information including triangle count, bounding box, surface area, and volume. Privacy Policy: https://www.boviosoft.com/apps/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For support or questions: support@boviosoft.com

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

STL Simple Viewer4 screens
STL Viewer2 screens

Verdict

The call

The clearest difference is review sentiment: STL Viewer at 100% against STL Simple Viewer's 18%. STL Viewer also leads on rating (5.0 vs 4.3) and ads (none vs shown). STL Simple Viewer's advantage is price (Free vs $0.99) and ratings volume (923 vs 1). On 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

STL Simple Viewer is free to download; STL Viewer costs $0.99 up front. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 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 4.3. That said, the two scores are not equally well evidenced: STL Simple Viewer has 923 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 18% of STL Simple Viewer's written reviews are positive against 100% of STL Viewer's.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 5 months, STL Viewer every 4 weeks. Both last shipped on November 3, 2026.

Scorecard7 real differences · 3 level
STL Simple Viewer versus STL Viewer: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerSTL Viewer
PriceFree — better$0.99
Rating4.3 (923 ratings)5.0 (1 ratings) — better
Positive reviews18.1% of reviews100.0% of reviews — better
Number of ratings923 — better1
Update frequencyEvery 5 monthsEvery 4 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size19 MB5 MB
Age rating4+4+
DeveloperVictor BovioFelipe Marques de Barros

Customer experience

STL Simple Viewer

All ratings909 ratings
Positive80.3%
Neutral4.5%
Negative15.2%
Written reviews166 reviews
Positive18.1%
Neutral11.4%
Negative70.5%

STL Viewer

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

Bugs and requests

STL Simple Viewer

Reported bugs

3 issues
  • App crashes when opening larger STL files
  • Inability to open some file formats
  • Ads continue to appear even after paying for ad removal

Requested features

3 requests
  • Add ability to save color/lighting settings
  • Improve stability and reduce crashes
  • Provide an ad-free paid version

STL Viewer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

STL Simple Viewer

Subscriptions2
  • Pro version (1 week plan)$0.997 Days
  • Pro version (1 month plan)3 Days trial$1.991 Month
One-time2
  • Remove Ads$2.99
  • Export Pack$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 STL Simple Viewer free?
STL Simple 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, STL Simple Viewer or STL Viewer?
STL Viewer is rated higher. STL Simple Viewer averages 4.3 out of 5 from 923 ratings, while STL Viewer averages 5.0 from 1 ratings.
Do STL Simple Viewer or STL Viewer have ads?
STL Simple Viewer shows ads; STL Viewer does not.
Which is updated more often, STL Simple Viewer or STL Viewer?
STL Simple Viewer ships an update every 5 months, and STL Viewer every 4 weeks. Most recently, STL Simple Viewer was updated on November 3, 2026 and STL Viewer on November 3, 2026.

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