Comparison

Autodesk Fusion vs ContextStacker

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

Head to head
About

Autodesk Fusion

Collaborate on 3D designs from anywhere with this mobile app. View, comment on, and share CAD models in over 100 formats. It works with a companion cloud-based desktop product for product design and development.

Highlights
  • View over 100 file formats
  • Collaborate on 3D designs
  • Comment on project activities
  • Share designs with stakeholders
  • Search and highlight parts
  • Offline data access
Read full description

Autodesk Fusion™ for iPhone and iPad lets you collaborate on 3D designs with anyone inside or outside your company. With the Fusion app, you have the flexibility to view and collaborate on your Fusion CAD models—anytime, anywhere. The app supports more than 100 file formats including DWG, SLDPRT, IPT, IAM, CATPART,IGES, STEP, STL, making it easy to share designs with your team, clients, partners, and friends. The free app works in conjunction with its companion cloud-based desktop product, Autodesk Fusion™, a 3D CAD, CAM, and CAE tool for product design and development. * To use Fusion for iPhone and iPad, you will need to sign in with your Fusion account information. FEATURES View • Upload and view more than 100 data formats including SLDPRT, SAT, IGES, STEP, STL, OBJ, DWG, F3D, SMT, and DFX • View and track project activities and updates • Review large and small 3D designs and assemblies • Access design properties and complete parts lists • Isolate and hide components in the model for easy viewing • Navigate by touch with zoom, pan, and rotate Comment • Upload photos to share info or report project status • Comment on project activities Share • Share with stakeholders inside and outside your company • Share screenshots of the design with markups directly from the app Search • Search for parts in the model and see them automatically highlighted in the design SUPPORT: https://knowledge.autodesk.com/contact-support Optional Access + Storage: Store offline data if needed, so you can view your data anywhere, anytime + Photos: Access files or data stored on your device to view, share and markup + Camera: Take pictures such as drawings with app Fusion will still function even if a user does not give permissions to access these functions.

About

ContextStacker

Features
Read full description

ContextStacker brings your workspace knowledge into one focused chat. Sign in with the same account you use on the web, then ask questions across readable documents and enabled API resources in your workspace. Answers stream as they are generated, support Markdown, and include source references so you can understand where the information came from. KEY FEATURES • Ask across your entire workspace without choosing a single document • Continue conversations shared with the ContextStacker web app • Receive streamed answers with Markdown formatting • Review document and API sources behind each answer • Start new conversations and revisit chat history • Switch workspaces and manage your account • View your current plan and usage Use the web app to add or manage documents and API resources or invite members. Workspace owners and billing managers can subscribe to Pro Annual or Business Annual in the iOS app. Each plan clearly shows its annual price and included services before purchase. ContextStacker supports English, Simplified Chinese, and Japanese. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Autodesk Fusion3 screens
ContextStacker4 screens

Verdict

The call

The clearest difference is in-app purchases: Autodesk Fusion at none against ContextStacker's 2. Autodesk Fusion also leads on iOS requirement (13.0 vs 17.0). ContextStacker's advantage is update cadence (every 3 days vs monthly). 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. ContextStacker sells 2 in-app purchases, starting at $99.00 per year. Autodesk Fusion asks for nothing beyond the download.

UpkeepUpdate frequency

Autodesk Fusion ships an update monthly, ContextStacker every 3 days. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Autodesk Fusion versus ContextStacker: the parameters behind the verdict, then further details
ParameterAutodesk FusionContextStacker
PriceFreeFree
Rating4.5 (4.1K ratings) — better—
Positive reviews59.1% of reviews—
Number of ratings4.1K — better—
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size124 MB7 MB
Age rating4+4+
DeveloperAutodesk Inc.鹏源 邱

Bugs and requests

Autodesk Fusion

Reported bugs

4 issues
  • Fails to open files
  • White screens and rendering issues
  • Inconsistent behavior across devices
  • Frequent crashes on latest iOS versions

Requested features

4 requests
  • Full editing capabilities on iPad
  • Ability to hide/show components
  • Improved rendering and visualization
  • Offline access and file management

ContextStacker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Autodesk Fusion

No in-app purchases

2 purchases

ContextStacker

Subscriptions2
  • Pro Annual$99.001 Year
  • Business Annual$199.001 Year

Questions

Is Autodesk Fusion free?
Autodesk Fusion is free to download, with no in-app purchases.
Is ContextStacker free?
ContextStacker is free to download, with in-app purchases available.
Do Autodesk Fusion or ContextStacker have ads?
Neither Autodesk Fusion nor ContextStacker shows ads.
Which is updated more often, Autodesk Fusion or ContextStacker?
Autodesk Fusion ships an update monthly, and ContextStacker every 3 days. Most recently, Autodesk Fusion was updated on October 21, 2026 and ContextStacker on October 14, 2026.

Other comparisons