Comparison

STL Simple Viewer vs Dotzza

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 3D STL & 3MF files and export them to the most commonly used CAD formats. Features: - Supports STL files both ASCII and Binary formats. - Supports 3MF files. - Load STL and 3MF files directly from ZIP archives. - Export to DXF, OBJ, DAE, PLY and USD. - Rotate, pan, and zoom models with intuitive touch controls. - Measure distances between points within your model. - 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

Dotzza

Features
Read full description

Dotzza — Projects, Together Healthcare education involves more than learning. There are dissertations, research projects, presentations, journal clubs, assignments, deadlines, documents, reviews and countless conversations happening along the way. Dotzza brings that work together in one shared workspace for healthcare students, mentors and educators. Create a Teamspace for your project, bring your team together, organize tasks and timelines, share files, discuss work, track progress and keep every stage of the project visible. Built for healthcare education Dotzza is designed around the kinds of academic and research projects healthcare learners actually work on — not adapted from a generic task list. Start with structured templates for projects such as: - Dissertation & Thesis • Short Studies & Research Projects • Case Reports • Journal Clubs • Systematic Reviews & Meta-analysis • Seminar & Paper Presentations • Poster Presentations • Journal Publications • Community Health Projects • Healthcare Camps • Research Protocols • Grant & Funding Projects • Curriculum & Workshop Projects • Doctoral Research Choose a project type and start with structure instead of a blank page. One workspace for the whole project Teamspaces Create a dedicated workspace for each project, with members, roles, timelines and tasks in one place. Tasks & Project Views Plan and track work using Kanban, List and Calendar views. Everyone can see what needs to happen and who owns it. Files & Documents Keep research files, submissions, presentations and other project documents organized with the project instead of scattered across conversations and devices. Chat & Collaboration Discuss work where the work happens. Keep project conversations connected to the people, tasks and documents they relate to. Objectives & Key Results Turn broad academic goals into measurable outcomes and track progress with your team and mentor. For students Move from “Where do I start?” to a clear project plan. Organize your work, collaborate with peers, submit files, track deadlines and see your progress throughout the project. For mentors & guides Get a clearer view of the students and projects you supervise. Follow submissions, progress and project activity without having to piece everything together from separate conversations and files. For institutions Bring projects, students, mentors and departments into a more organized collaborative environment. Gain visibility across academic projects and support students before small delays become bigger problems. Work wherever healthcare education happens Dotzza is available on iPhone, iPad, Android and the web, so your project stays accessible between lectures, clinical postings, library sessions, meetings and research work. Less searching. Less scattered work. More clarity about what happens next. Dotzza is a project collaboration and project management platform for healthcare education. It is not a clinical system and does not provide medical advice, diagnosis or treatment recommendations. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

STL Simple Viewer4 screens
Dotzza4 screens

Verdict

The call

The clearest difference is ads: Dotzza at none against STL Simple Viewer's shown. Dotzza also leads on update cadence (fortnightly vs every 20 months) and iOS requirement (15.6 vs 17.0). On price, in-app purchases 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

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 Dotzza sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 20 months, Dotzza fortnightly. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
STL Simple Viewer versus Dotzza: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerDotzza
PriceFreeFree
Rating4.3 (866 ratings) — better—
Positive reviews17.2% of reviews—
Number of ratings866 — better—
Update frequencyEvery 20 monthsFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size19 MB92 MB
Age rating+44+
DeveloperVictor BovioDotzza

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

Dotzza

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 to OBJ, DAE, DXF, PLY$3.99
4 purchases

Dotzza

Subscriptions4
  • Dotzza Lite Monthly$2.991 Month
  • Dotzza Pro – Monthly$2.991 Month
  • Dotzza Lite – Yearly$19.991 Year
Show 1 more
  • Dotzza Pro – Yearly$29.991 Year

Questions

Is STL Simple Viewer free?
STL Simple Viewer is free to download, with in-app purchases available.
Is Dotzza free?
Dotzza is free to download, with in-app purchases available.
Do STL Simple Viewer or Dotzza have ads?
STL Simple Viewer shows ads; Dotzza does not.
Which is updated more often, STL Simple Viewer or Dotzza?
STL Simple Viewer ships an update every 20 months, and Dotzza fortnightly. Most recently, STL Simple Viewer was updated on September 30, 2026 and Dotzza on September 29, 2026.

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