Best STP One alternatives: apps like STP One - STEP CAD Viewer

9+ similar apps compared and reviewed

5.0 avg rating

9 free apps

Updated October 2026

STP One - STEP CAD Viewer

JAEYUN HWANG

💼 Business

📊 Productivity

Whether you want more options like STP One or a completely different take on the same concept, our curated list of 9+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

KobCard by KOB MARKETING

Gift Card Information Platform

📊 Productivity

4.1(363 ratings)

Free

KobCard is a comprehensive gift card information platform that offers real-time exchange rates, price calculations, and the latest news on gift cards. It serves as a one-stop destination for individuals looking to buy, sell, or stay informed about the world of gift cards.

Top Alternatives to STP One

Cadaclysm by Blitter

Offline CAD & BIM File Viewer

Editor's Choice

📊 Productivity

0.0(0 ratings)

Free

Caddis: DWG & CAD Viewer by Jacob Blumsack

Measure & mark up DXF, STL, 3D

Strong Contender

📊 Productivity

5.0(1 ratings)

Free

Quickly open, review, and mark up CAD drawings and 3D models directly on your device. This private, offline tool allows for precise measurements and annotations without needing an account or cloud upload.

CADVault by Thomas Hoche

Offline STEP & 3D Viewer

Worth Considering

📊 Productivity

0.0(0 ratings)

Free

More apps like STP One

OrbitCAD

No CAD experience required

vPlan AR: Floor Plan Scanner

LiDAR Floor Plans in Seconds

Free

Transform your iPhone into a powerful floor plan scanner using its LiDAR sensor. Capture room dimensions, generate detailed 2D and 3D floor plans instantly, and export them in professional formats like PDF, DXF, and OBJ. Edit and share your plans easily online.

LiDAR-powered room scanningInstant 2D and 3D floor plan generationProfessional export formats (PDF, DXF, OBJ)

DWG, STL & 3D CAD File Viewer

Open DXF, STEP, 3MF, IGES, PLY

Free

View and inspect various CAD file formats, including DWG, DXF, and 3D models, directly on your iPhone, iPad, or Mac. Offers private, local processing without uploads or ads, with AR capabilities and PDF report generation for Pro users.

Open and inspect DWG, DXF, and 3D CAD filesLocal file processing for privacyOrbit, pan, and zoom 3D scenes

📊 Productivity

(1)

free with in-app purchases

Compare with STP One

STEP Viewer

Fast STEP File Viewer

Cut list for rods & profiles

SnapCAD : DWG,DXF,STEP,STL,3MF

Lightweight DWG/DXF Viewer

Free

A fast 2D and 3D CAD viewer for engineers, architects, and 3D printing enthusiasts. Inspect engineering models, review fabrication data, and manage CAD documents on your device with support for various file formats.

STEP, STP, STL, 3MF 3D viewingDWG and DXF 2D/3D drawing supportDistance and geometry measurement tools

📊 Productivity

(0)

free with in-app purchases

Compare with STP One