Comparison

STL Simple Viewer vs Nozzly

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

Nozzly

Calculate the true selling price of your 3D prints by factoring in material, electricity, and desired profit margin. Designed for makers who sell their creations, this tool helps you avoid undercharging for your work.

Highlights
  • Calculate selling price with material, electricity, and margin
  • Save printers, filaments, and designs
  • Add photos and SKUs per figure
  • Price rounding and currency selection
  • Share quotes instantly
  • Generate PDF quotes with business details
Features
Read full description

Nozzly calculates the real sale price of your 3D prints — no more guessing. Enter your filament, print time and margin, and Nozzly tells you what to charge, factoring in material, waste, electricity, the time your machine is running and your profit. Built for makers who sell their prints and want to stop giving away their work. FREE includes: Price calculator with material (one or several filaments), waste, electricity and margin Print hour cost: charge for the time your machine is actually running Categories to organize your catalog by theme and filter it in one tap Tax included or added on top, with a Base + tax breakdown Save your printers and filaments, with color and type (PLA, PETG, ABS, TPU…) Photo and SKU per figure Price rounding and currency selection Share the quoted price in one tap NOZZLY PREMIUM (one-time purchase, no subscription) unlocks: Unlimited printers, filaments and figures PDF quotes with your business name and logo, ready to send Saved clients with tax ID and contact details, to quote in one tap Groups: build a product out of several pieces and quote it as one Quote groups and single pieces in the same quote, with optional per-piece breakdown Import the .3mf from your slicer and create the figures automatically Reusable extras (bag, keyring, paint…), with prorated charging by quantity Filament inventory: deduct your stock when printing, with low-stock alerts Export your catalog to Excel / CSV Labor and machine depreciation added to the price Custom quote message with your brand Charge what you're worth. Start free and upgrade to Premium whenever you need it. Questions or ideas? Reach out — Nozzly keeps growing with the maker community.

Screenshots

STL Simple Viewer4 screens
Nozzly4 screens

Verdict

The call

The clearest difference is review sentiment: Nozzly at 100% against STL Simple Viewer's 18%. Nozzly also leads on rating (5.0 vs 4.3) and ads (none vs shown). STL Simple Viewer's advantage is ratings volume (909 vs 1). On price, in-app purchases, monetization model 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 Nozzly 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

Nozzly 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 909 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 18% of STL Simple Viewer's written reviews are positive against 100% of Nozzly's.

UpkeepUpdate frequency

STL Simple Viewer ships an update every 5 months, Nozzly every 2 days. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

Scorecard5 real differences · 5 level
STL Simple Viewer versus Nozzly: the parameters behind the verdict, then further details
ParameterSTL Simple ViewerNozzly
PriceFreeFree
Rating4.3 (909 ratings)5.0 (1 ratings) — better
Positive reviews18.1% of reviews100.0% of reviews — better
Number of ratings909 — better1
Update frequencyEvery 5 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size19 MB2 MB
Age rating4+4+
DeveloperVictor BovioALEJANDRO ROSALES ARZOLA

Customer experience

STL Simple Viewer

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

Nozzly

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
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

Nozzly

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

Nozzly

One-time1
  • Nozzly Premium$9.99

Questions

Is STL Simple Viewer free?
STL Simple Viewer is free to download, with in-app purchases available.
Is Nozzly free?
Nozzly is free to download, with in-app purchases available.
Which has better reviews, STL Simple Viewer or Nozzly?
Nozzly is rated higher. STL Simple Viewer averages 4.3 out of 5 from 909 ratings, while Nozzly averages 5.0 from 1 ratings.
Do STL Simple Viewer or Nozzly have ads?
STL Simple Viewer shows ads; Nozzly does not.
Which is updated more often, STL Simple Viewer or Nozzly?
STL Simple Viewer ships an update every 5 months, and Nozzly every 2 days. Most recently, STL Simple Viewer was updated on October 19, 2026 and Nozzly on October 11, 2026.

Other comparisons