CAD Assistant

1.6.0

OPEN CASCADE

4.25

3,166 reviews

500,000+
Downloads

Free

Viewer and converter for 3D CAD and mesh models

This app is currently not available on Google Play.

Try these apps instead

CAD Assistant by OPEN CASCADE is an offline viewer and converter for 3D CAD and mesh models, enabling on-device viewing, assembly navigation, and broad format support. It offers STEP, IGES, BREP, and mesh formats, with export to multiple formats and a touch-friendly workflow. With 500,000+ total and a 4.25 rating from 3166 users, it shows strong adoption in productivity for CAD tasks.

Pros & Cons

Offline operation enables on-device viewing and conversion without internet
Broad format support for CAD and mesh formats
Assembly-aware workflow with property querying
Export to multiple CAD/mesh formats and PNG export

Limited editing tools and absence of DWG/PDF editing features compared to some competitors
Performance may be slower on large files on devices with limited memory or GPUs
Requires OpenGL ES 3.0+; may not run on older devices or hardware

About CAD Assistant

CAD Assistant was a productivity app developed by OPEN CASCADE. It was removed from Google Play May 10, 2025 and is no longer available for download.

Download Statistics

CAD Assistant had been downloaded 740 thousand times before it became unavailable.

User Ratings

CAD Assistant was rated 4.25 out of 5 stars, based on 3.2 thousand ratings.

App Information

CAD Assistant was free to download. The APK download size was 43.16 MB. The last available version was 1.6.0. The last update was on October 6, 2021.

Technical Requirements

CAD Assistant required Android 4.1+ or higher. The app had a content rating of Everyone. The app had been available on Google Play December 2014.

Description

OPEN CASCADE CAD Assistant for Android is an offline viewer and converter for 3D CAD and mesh models.

More data about CAD Assistant

Price	Free to download
Total downloads	740 thousand
Rating	4.25 based on 3.2 thousand ratings
Version	1.6.0
APK size	43.2 MB
Number of libraries	0
Designed for Android	4.1+
Suitable for	Everyone
Ads	NO ads

App Performance Report

Get a detailed PDF report for CAD Assistant with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Google Play Rating history and histogram

2.1K

470

190

110

280

Downloads over time

CAD Assistant has been downloaded 740 thousand times.

Changelog of CAD Assistant

May 10, 2025Unpublished
Oct 22, 2021Installs500,000+ installs
Oct 6, 2021UpdateVersion 1.6.0
Jan 11, 2021UpdateVersion 1.5.0
Dec 28, 2020UpdateVersion 1.5
Mar 28, 2020UpdateVersion 1.4
Jan 26, 2020UpdateVersion 1.4
Dec 31, 2019UpdateVersion 1.4
Aug 24, 2019UpdateVersion 1.3
Aug 14, 2019UpdateVersion 1.3
Jan 14, 2019UpdateVersion 1.2.1
Oct 30, 2018UpdateVersion 1.2
Feb 14, 2018UpdateVersion 1.0
Dec 3, 2017Installs100,000+ installs
Apr 3, 2017UpdateVersion 0.9
Nov 26, 2016UpdateVersion 0.8
Nov 16, 2016UpdateVersion 0.8
Oct 17, 2016Installs50,000+ installs
Jul 19, 2016UpdateVersion 0.7
Dec 21, 2015Installs10,000+ installs
Oct 31, 2015Installs5,000+ installs
Sep 23, 2015UpdateVersion 0.6
Sep 11, 2015UpdateVersion 0.6
May 17, 2015UpdateVersion 0.5
Apr 21, 2015UpdateVersion 0.4
Mar 19, 2015Installs1,000+ installs
Jan 30, 2015Installs500+ installs
Jan 26, 2015UpdateVersion 0.3
Jan 10, 2015UpdateVersion 0.2
Dec 29, 2014Installs100+ installs
Dec 18, 2014New AppVersion 0.1 in PRODUCTIVITY for Free

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Developer information for OPEN CASCADE

OPEN CASCADE

Website

OPEN CASCADE SAS Headquarters
1 place des Frères Montgolfier,
78280 Guyancourt,
France

Comments on CAD Assistant for Android

★★★★★ The best app for viewing cad files on the go. The ability to hide and show is particularly handy. The options are sufficient and easy to use.

★★★★★ Best 3D viewer app that I've come across so far. I've tried alot and most won't even load an obj or stl and are purely built around the idea that it can but can't. I was about to give up, and I found this. Works great for what I'm using it for with included bells and whistles. Thank you!

★★★★★ Easy to view 3d model, but unable to open xt format file. Please work on it

★★☆☆☆ After the last update of app it's not shown in supported app list on WhatsApp, due to these files cannot be directly opened from WhatsApp.

★★☆☆☆ And how am I supposed to open textures when it opens some "computer"?

★★☆☆☆ Works, but doesn't integrate well with Android. Can load files only through its dialog. Selecting a file in My Files then choosing Open With doesn't work.

Technologies used by CAD Assistant

CAD Assistant is requesting 3 permissions and is using 1 libraries.

Permissions

Development tools

test access to protected storage

Storage

modify or delete the contents of your USB storage

System tools

prevent phone from sleeping

No known libraries used.

Trust & Safety: App requests storage-related permissions (READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE) and WAKE_LOCK to support opening/saving files and background processing. No network permissions are listed; designed for offline CAD viewing and conversion.

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