Comparison

STEP File Viewer vs JSON Formatter Simple Parsing

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

Head to head
About

STEP File Viewer

View and interact with 3D CAD files like STEP and IGES. Inspect internal geometry, measure dimensions, and export models in various formats. Ideal for engineers, designers, and students needing to visualize complex designs without expensive software.

Highlights
  • 3D model viewing with pan, zoom, and rotate
  • Solid, shaded, and wireframe display modes
  • Measure dimensions and features
  • Section planes for internal geometry inspection
  • Export models to STL, OBJ, glTF, and more
  • Supports assembly data and PMI annotations
Features
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STEP File Viewer is a lightweight yet powerful tool for viewing .step and .stp files on macOS, iPad, and iPhone. Key Features • View STEP models in 3D with rotate, pan, and zoom controls using perspective projection. • Display 3D models in solid, shaded, or wireframe modes. • Load and view IGES/IGS models. • Supports assembly-level colors and exploded views (requires the model to include assembly data). • Parse and load STEP models as assemblies • Support PMI annotations, dimension details, and model information panels in AP242 models for easier design review. • Measure auto-detected hole features, bounding box dimensions, point-to-point distances, diameter/radius, and angles to verify key dimensions more quickly. • Pin review notes on the model to record issues, jump back to each note’s viewpoint, and export a review report as PDF with screenshots. • Apply axis-aligned section planes (XY, XZ, YZ) to reveal the model’s internal geometry. • Explode model components to inspect the parts clearly in expanded space, with the ability to export selected parts as separate files. • Export 3D models in STL, OBJ, glTF, GLB, or USDZ formats for further use or sharing. • Capture high-quality viewport screenshots for easy sharing. • No ads. No tracking. No data collection. Just a clean, efficient tool built for productivity. The STEP format (ISO 10303) is widely supported by 3D CAD, CAM, CAE, and PLM applications. Recommended For: • Engineers & Designers: Review designs on the shop floor or during client meetings. • Machinists & CNC Operators: Quickly verify part geometry before production. • 3D Printing Enthusiasts: Easily convert professional STEP files to STL for slicing. • Students & Educators: Visualize complex structures without expensive CAD licenses. Pricing & Access • Free: Load and view unlimited STEP models. • Subscription: Unlimited access to all features. A single subscription covers macOS, iPhone, and iPad. • Individual Unlocks: Get exactly what you need with one-time purchases for specific features—no subscription required. • Payment is charged to your App Store account. • Auto-renews unless turned off at least 24 hours before the current period ends. • Manage your subscriptions in the App Store settings. Privacy & Purchase Terms • Privacy Policy: https://apps.h53d.xyz/apps/step-file-viewer/policy.html • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Have questions or need support? Reach out to danjian42@gmail.com.

About

JSON Formatter Simple Parsing

Features
Read full description

A simple JSON Formatter which allows you to import JSON files or text and format it properly. It also includes an option to export the formatted JSON directly as a JSON file to your iOS Files app.

Screenshots

STEP File Viewer4 screens
JSON Formatter Simple Parsing3 screens

Verdict

The call

The clearest difference is in-app purchases: JSON Formatter Simple Parsing at none against STEP File Viewer's 12. STEP File Viewer's advantage is iOS requirement (16.0 vs 26.0). On price, ads 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. STEP File Viewer sells 12 in-app purchases, starting at $1.99 per 7 days. JSON Formatter Simple Parsing asks for nothing beyond the download.

Scorecard2 real differences · 8 level
STEP File Viewer versus JSON Formatter Simple Parsing: the parameters behind the verdict, then further details
ParameterSTEP File ViewerJSON Formatter Simple Parsing
PriceFreeFree
Rating3.2 (6 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings6 — better—
Update frequencyFortnightly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.0 — better26.0
Further details — not scored
Size33 MB5 MB
Age rating4+4+
Developer维 艾Marvin Krueger

In-app purchases

12 purchases

STEP File Viewer

Subscriptions3
  • Pro Flex3 Days trial$1.997 Days
  • Pro Light$4.991 Month
  • Pro Infinity$19.991 Year
One-time9
  • Export as USDZ$1.99
  • Export as PNG$2.99
  • Export as OBJ$3.99
Show 6 more
  • Export as STL$3.99
  • IGES/STEP Model Import$3.99
  • Projection view generation & export$4.99
  • Cross Section View$4.99
  • Exploded View$4.99
  • Export all formats$15.99
None

JSON Formatter Simple Parsing

No in-app purchases

Questions

Is STEP File Viewer free?
STEP File Viewer is free to download, with in-app purchases available.
Is JSON Formatter Simple Parsing free?
JSON Formatter Simple Parsing is free to download, with no in-app purchases.
Do STEP File Viewer or JSON Formatter Simple Parsing have ads?
Neither STEP File Viewer nor JSON Formatter Simple Parsing shows ads.

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