STL Simple Viewer vs Signal Conditioning
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Signal Conditioning
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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
Verdict
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
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.
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.
| Parameter | STL Simple Viewer | Signal Conditioning |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.3 (923 ratings) — better | — |
| Positive reviews | 18.1% of reviews | — |
| Number of ratings | 923 — better | — |
| Update frequency | Every 5 months — better | Every 21 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 16.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Victor Bovio | Fabrizio 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
STL Simple Viewer
- Pro version (1 week plan)$0.997 Days
- Pro version (1 month plan)3 Days trial$1.991 Month
- Remove Ads$2.99
- Export Pack$3.99
Signal Conditioning
No in-app purchases
Questions
Is STL Simple Viewer free?
Is Signal Conditioning free?
Do STL Simple Viewer or Signal Conditioning have ads?
Which is updated more often, STL Simple Viewer or Signal Conditioning?
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