Comparison

STL Simple Viewer vs Signal Conditioning

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

Signal Conditioning

Features
Read full description

Measuring voltages and currents using ADCs usually requires properly conditioning the signals to match the ADC's characteristics: mainly scaling and shifting. Usually circuits based on Operation Amplifiers are used for this purpouse with differente approaches for voltages and currents. Signal Conditioning application picks the suitable circuit basing on input and output signals' characteristics and makes all the required calculations providing a conditioning circuit in a matter of minutes.

Screenshots

STL Simple Viewer4 screens
Signal Conditioning4 screens

Verdict

The call

The clearest difference is price: STL Simple Viewer at Free against Signal Conditioning's $3.99. STL Simple Viewer also leads on update cadence (every 5 months vs every 21 months). Signal Conditioning's advantage is in-app purchases (none vs 4) and ads (none vs shown). On 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; Signal Conditioning costs $3.99 up front. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. Signal Conditioning asks for nothing beyond the download.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 5 months, Signal Conditioning every 21 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
STL Simple Viewer versus Signal Conditioning: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerSignal Conditioning
PriceFree — better$3.99
Rating4.3 (923 ratings) — better—
Positive reviews18.1% of reviews—
Number of ratings923 — better—
Update frequencyEvery 5 months — betterEvery 21 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.016.1 — better
Further details — not scored
Size19 MB1 MB
Age rating4+4+
DeveloperVictor BovioFabrizio Boco

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

Signal Conditioning

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

Signal Conditioning

No in-app purchases

Questions

Is STL Simple Viewer free?
STL Simple Viewer is free to download, with in-app purchases available.
Is Signal Conditioning free?
Signal Conditioning costs $3.99, with no in-app purchases.
Do STL Simple Viewer or Signal Conditioning have ads?
STL Simple Viewer shows ads; Signal Conditioning does not.
Which is updated more often, STL Simple Viewer or Signal Conditioning?
STL Simple Viewer ships an update every 5 months, and Signal Conditioning every 21 months. Most recently, STL Simple Viewer was updated on November 7, 2026 and Signal Conditioning on November 3, 2026.

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