Vibra Test vs STL Simple Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vibra Test
This tool helps assess the vibration severity of rotating machinery according to ISO 10816-03 standards. Users input machine power, foundation type, and vibration velocity to determine the operating condition, displayed in color-coded zones.
- Vibration severity testing
- ISO 10816-03 compliance
- Machine power selection
- Foundation type selection
- Color-coded operating zones
- Metric/Imperial units
- Result sharing via email
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Vibra Test is a tool for vibration severity test of rotating machinery based on ISO 10816-03. User selects the type of the machine based on the power rating of the machine, selects the type of foundation (flexible or rigid), enters the RMS value of vibration velocity, and the App shows the operating condition of the machine. (Zone A: Blue, Zone B: Green, Zone C: Yellow, Zone D: Red). FEATURES: - Metric and Imperial units option - Interactive vibration severity table - Screenshot saving in the photo library - Email the results of the test DISCLAIMER: Vibra Test is intended for educational purposes. Although the calculations by this app were made with great care, it may contain error or inaccuracies. Using the results of the calculations is the responsibility of the user.
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
Screenshots
Verdict
The clearest difference is rating: STL Simple Viewer at 4.3 against Vibra Test's 3.5. STL Simple Viewer also leads on ratings volume (909 vs 2) and update cadence (every 5 months vs every 18 months). Vibra Test's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, review sentiment and 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
Both are free to download. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days. Vibra Test asks for nothing beyond the download.
STL Simple Viewer holds the better App Store score, 4.3 against 3.5. That said, the two scores are not equally well evidenced: STL Simple Viewer has 909 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 25% of Vibra Test's written reviews are positive against 18% of STL Simple Viewer's, so the app with the better star average is not the one people write more warmly about.
Vibra Test ships an update every 18 months, STL Simple Viewer every 5 months. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.
| Parameter | Vibra Test | STL Simple Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (2 ratings) | 4.3 (909 ratings) — better |
| Positive reviews | 25.0% of reviews — better | 18.1% of reviews |
| Number of ratings | 2 | 909 — better |
| Update frequency | Every 18 months | Every 5 months — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 7.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 10 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Motionics LLC | Victor Bovio |
Customer experience
Vibra Test
STL Simple Viewer
Bugs and requests
Vibra Test
Not enough reviews yet to summarise bugs or 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
In-app purchases
Vibra Test
No 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
Questions
Is Vibra Test free?
Is STL Simple Viewer free?
Which has better reviews, Vibra Test or STL Simple Viewer?
Do Vibra Test or STL Simple Viewer have ads?
Which is updated more often, Vibra Test or STL Simple Viewer?
Other comparisons
