Comparison

STL Simple Viewer vs Tolleranze

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

Tolleranze

Features
Read full description

ISO 286 Tolerance Calculator for machinists, turners and CNC operators. No more paper tables. Enter nominal diameter and tolerance (e.g. H7 or g6) and instantly get upper/lower deviations, max/min dimensions and clearance / interference. - Full range up to 3150mm - All fits: clearance, interference, transition - Fast, offline, built for the workshop - Compliant with ISO 286-1 and ISO 286-2 Essential for workshop, quality control and mechanical design.

Screenshots

STL Simple Viewer4 screens
Tolleranze2 screens

Verdict

The call

The clearest difference is price: STL Simple Viewer at Free against Tolleranze's $3.99. Tolleranze's advantage is in-app purchases (none vs 4) and ads (none vs shown). On 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

CostPrice · In-app purchases · Ads · Monetization

STL Simple Viewer is free to download; Tolleranze costs $3.99 up front. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. Tolleranze asks for nothing beyond the download.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 5 months, Tolleranze every 9 days. The most recent releases landed on November 11, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
STL Simple Viewer versus Tolleranze: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerTolleranze
PriceFree — better$3.99
Rating4.3 (929 ratings) — better—
Positive reviews18.1% of reviews—
Number of ratings929 — better—
Update frequencyEvery 5 monthsEvery 9 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size19 MB5 MB
Age rating4+4+
DeveloperVictor BovioMorad Ouaid

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

Tolleranze

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
None

Tolleranze

No in-app purchases

Questions

Is STL Simple Viewer free?
STL Simple Viewer is free to download, with in-app purchases available.
Is Tolleranze free?
Tolleranze costs $3.99, with no in-app purchases.
Do STL Simple Viewer or Tolleranze have ads?
STL Simple Viewer shows ads; Tolleranze does not.
Which is updated more often, STL Simple Viewer or Tolleranze?
STL Simple Viewer ships an update every 5 months, and Tolleranze every 9 days. Most recently, STL Simple Viewer was updated on November 11, 2026 and Tolleranze on September 30, 2026.

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