Comparison

STL Simple Viewer vs Steppy

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

Steppy

Features
Read full description

Steppy is a simple study planning and productivity app that helps students organise tasks, break assignments into smaller steps, stay focused, and track progress. Designed for students, self-learners, and anyone who feels overwhelmed by study tasks, Steppy helps turn big goals into clear next actions. Instead of staring at a large assignment and not knowing where to start, Steppy helps you create a plan, choose the next tiny step, and build steady progress over time. Key features: • Create and manage study tasks • Break large assignments into smaller steps • See your next best move • Use a focus timer to protect short study sessions • Reset when you feel stuck or overwhelmed • Track daily and weekly progress • Build better study routines • Use a clean, low-clutter planner layout Steppy is useful for students who want more structure, better focus, and a simpler way to manage study work. It is designed with simple screens, small steps, and clear progress tracking to support low-clutter study planning. Steppy Pro unlocks additional planning and productivity features to support deeper study organisation and progress tracking. Steppy Pro is available as an optional auto-renewable subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://trysteppy.com/privacy Support: https://trysteppy.com/support

Screenshots

STL Simple Viewer4 screens
Steppy4 screens

Verdict

The call

The clearest difference is ads: Steppy at none against STL Simple Viewer's shown. Steppy also leads on update cadence (every 8 days vs every 5 months) and iOS requirement (15.1 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 Steppy sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 5 months, Steppy every 8 days. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
STL Simple Viewer versus Steppy: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerSteppy
PriceFreeFree
Rating4.3 (923 ratings) — better—
Positive reviews18.1% of reviews—
Number of ratings923 — better—
Update frequencyEvery 5 monthsEvery 8 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size19 MB60 MB
Age rating4+4+
DeveloperVictor BovioAkalahandi De Silva

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

Steppy

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
2 purchases

Steppy

Subscriptions2
  • Steppy Pro$3.991 Month
  • Steppy Pro Yearly$34.991 Year

Questions

Is STL Simple Viewer free?
STL Simple Viewer is free to download, with in-app purchases available.
Is Steppy free?
Steppy is free to download, with in-app purchases available.
Do STL Simple Viewer or Steppy have ads?
STL Simple Viewer shows ads; Steppy does not.
Which is updated more often, STL Simple Viewer or Steppy?
STL Simple Viewer ships an update every 5 months, and Steppy every 8 days. Most recently, STL Simple Viewer was updated on November 3, 2026 and Steppy on October 24, 2026.

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