Comparison

Document Scanner App vs STL Viewer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Document Scanner App

Features
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Doc Scanner turns your iPhone and iPad into a document scanner. Point the camera at a page and the app captures it, cleans it up, and reads the text with Apple's on-device Vision engine. Scanning and text recognition run entirely on your device. SCAN - Multi-page scans with automatic edge detection - Reorder, rescan, and delete pages - Enhance filters: Original, Enhance, Grayscale, and Black & White READ TEXT (OCR) - Recognized text is searchable, selectable, and editable - Copy text from any page - Works with the languages your device supports BUILD PDFs - Export PDFs with an embedded, searchable text layer - Add images, text boxes, and signatures on top of a page - Crop, rotate, and arrange items - ID Card layout places the front and back on a single page ORGANIZE - Group scans into folders - Mark each document as Document, Receipt, or ID Card, and filter by type EXPORT AND SHARE - Password-protect a PDF before you share it - Print over AirPrint - Share through the system share sheet SHORTCUTS - Start a scan with Siri or the Shortcuts app: "Scan Document" Doc Scanner is localized in 30 languages.

About

STL Viewer

Features
Read full description

View STL 3D models and prepare them for 3D printing on your iPhone or iPad. Built for makers, engineers, designers, and 3D printing enthusiasts who need to open, inspect, measure, and export 3D mesh files with precision. KEY FEATURES UNIVERSAL STL SUPPORT • STL (binary and ASCII) • High-poly mesh handling • Fast file opening from Files app, share sheet, or AirDrop • Direct import from Thingiverse, Printables, MakerWorld, and other 3D model sites PRECISION MEASUREMENT TOOLS • Distance measurement between any two points on the mesh • Angle measurement across three vertices • Bounding box with exact X, Y, Z dimensions • Measurement units: mm, cm, inches PROFESSIONAL 3D INSPECTION • Solid and wireframe render modes • Smooth orbit camera with pinch-to-zoom, pan, and rotate gestures • Floor grid overlay for scale reference • Customizable model color • Real-time lit shading with directional and ambient lighting EXPORT & SHARE • Export to OBJ, DAE, and DXF formats • Capture high-resolution screenshots of any view • Share directly to Prusa Slicer, Bambu Studio, Creality Print, and other slicers • Preserve mesh integrity across exports PERFECT FOR • 3D printer owners checking models before slicing • Engineers inspecting CAD exports as STL • Designers reviewing client meshes on the go • Makers browsing Thingiverse, Printables, MakerWorld files • Students learning 3D modeling and printing • Anyone who needs to view STL files without a desktop PRECISION VIEWER • Hardware-accelerated 3D rendering • Infinite pinch-to-zoom for detailed inspection • Smooth gesture controls for any model size • Handles models with hundreds of thousands of triangles PRIVACY FIRST • All processing happens entirely on-device • No internet connection required • Your files never leave your device • Works completely offline — 100% private and secure Download now and inspect your STL files with professional-grade precision. Privacy Policy: https://nagy-legal.vercel.app/stl-viewer/privacy.html

Screenshots

Document Scanner App4 screens
STL Viewer4 screens

Verdict

The call

The clearest difference is ads: STL Viewer at none against Document Scanner App's shown. STL Viewer also leads on update cadence (every 8 days vs every 2 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 Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Document Scanner App sells 1 one-off in-app purchase and STL Viewer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Document Scanner App ships an update every 2 months, STL Viewer every 8 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Document Scanner App versus STL Viewer: the parameters behind the verdict, then further details
ParameterDocument Scanner AppSTL Viewer
PriceFreeFree
Update frequencyEvery 2 monthsEvery 8 days — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size8 MB39 MB
Age rating4+12+
DeveloperJose Gerardo Palma DuranMohamed Nagy

In-app purchases

1 purchases

Document Scanner App

One-time1
  • Remove Ads$0.99
1 purchases

STL Viewer

One-time1
  • Lifetime$12.99

Questions

Is Document Scanner App free?
Document Scanner App is free to download, with in-app purchases available.
Is STL Viewer free?
STL Viewer is free to download, with in-app purchases available.
Do Document Scanner App or STL Viewer have ads?
Document Scanner App shows ads; STL Viewer does not.
Which is updated more often, Document Scanner App or STL Viewer?
Document Scanner App ships an update every 2 months, and STL Viewer every 8 days. Most recently, Document Scanner App was updated on October 24, 2026 and STL Viewer on October 25, 2026.

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