Comparison

STL Simple Viewer vs Union Member Assistant

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

Union Member Assistant

Organize union-related information, document workplace incidents, and manage grievances with guided workflows. Access contracts, record details, and generate professional reports for printing or sharing. This tool helps members and stewards stay prepared and informed.

Highlights
  • Document workplace investigations
  • Manage grievance records
  • Access and search contracts
  • Generate PDF reports
  • Offline access
  • Transfer cases between users
Features
Read full description

Union Member Assistant is an organizational toolkit for union members and stewards. Keep essential workplace information together, prepare for meetings, document incidents, manage grievances, and access your contracts wherever the job takes you. Use guided workflows to record workplace investigations, disciplinary meetings, member statements, supervisor details, supporting evidence, steward notes, and requested remedies. Create and track grievances from initial documentation through resolution, then generate a professional PDF for printing or sharing. Import collective bargaining agreements and other PDF documents for convenient access. Search contract text, jump directly to a page, save important sections as bookmarks, and exchange compatible bookmark files with other app users. Union Member Assistant can also help you: • Document workplace investigations and disciplinary matters • Prepare and manage detailed grievance records • Record hours, earnings, and related work information • Save notes, attachments, evidence, and signatures • Maintain union contacts and member information • Search imported contracts and bookmark key provisions • Generate, print, and share grievance PDFs • Transfer editable cases and grievances between app users • Back up and restore saved app information • Access built-in educational resources and workplace-rights guidance • Continue working with saved information while offline Designed with privacy in mind, saved records and imported documents are stored locally on your device. Optional device security features can help protect access to sensitive workplace information. Whether you are preparing for a meeting, reviewing contract language, documenting a concern, or organizing an active grievance, Union Member Assistant gives you a practical place to keep the details that matter. Union Member Assistant is an independent organizational and educational tool. It is not affiliated with, endorsed by any employer or labor organization. It does not provide legal advice and is not a substitute for your collective bargaining agreement, official union guidance, or advice from a qualified union representative or attorney. Always verify requirements, procedures, and filing deadlines with the applicable agreement and your union.

Screenshots

STL Simple Viewer4 screens
Union Member Assistant4 screens

Verdict

The call

The clearest difference is rating: Union Member Assistant at 5.0 against STL Simple Viewer's 4.3. Union Member Assistant also leads on ads (none vs shown) and update cadence (every 9 days vs every 5 months). STL Simple Viewer's advantage is ratings volume (920 vs 1). On price, 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

Both are free to download. STL Simple Viewer sells 4 in-app purchases, starting at $0.99 per 7 days and Union Member Assistant sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Union Member Assistant 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 920 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 5 months, Union Member Assistant every 9 days. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
STL Simple Viewer versus Union Member Assistant: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerUnion Member Assistant
PriceFreeFree
Rating4.3 (920 ratings)5.0 (1 ratings) — better
Positive reviews18.1% of reviews—
Number of ratings920 — better1
Update frequencyEvery 5 monthsEvery 9 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better18.6
Further details — not scored
Size19 MB13 MB
Age rating4+12+
DeveloperVictor BovioCory Johnson

Customer experience

STL Simple Viewer

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

Union Member Assistant

All ratings1 ratings
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

Union Member Assistant

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
1 purchases

Union Member Assistant

One-time1
  • Full Version$6.99

Questions

Is STL Simple Viewer free?
STL Simple Viewer is free to download, with in-app purchases available.
Is Union Member Assistant free?
Union Member Assistant is free to download, with in-app purchases available.
Which has better reviews, STL Simple Viewer or Union Member Assistant?
Union Member Assistant is rated higher. STL Simple Viewer averages 4.3 out of 5 from 920 ratings, while Union Member Assistant averages 5.0 from 1 ratings.
Do STL Simple Viewer or Union Member Assistant have ads?
STL Simple Viewer shows ads; Union Member Assistant does not.
Which is updated more often, STL Simple Viewer or Union Member Assistant?
STL Simple Viewer ships an update every 5 months, and Union Member Assistant every 9 days. Most recently, STL Simple Viewer was updated on October 29, 2026 and Union Member Assistant on October 24, 2026.

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