Comparison

Flatter Files vs Onshape 3D CAD

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

Head to head
About

Flatter Files

This app provides a digital filing system for companies to efficiently distribute drawings and documents. It allows for easy searching, automatic updates, and organized grouping of items for quick access. Users can also share external links to their content.

Highlights
  • Digital flat file cabinet
  • Efficient document distribution
  • Searchable content
  • Automatic updates
  • Grouped assemblies
  • External sharing links
  • Mobile viewer capabilities
Features
Read full description

Flatter Files is a digital flat file cabinet that allows companies to distribute their drawings and documents to viewers more efficiently by providing a simple method to search all of your content, automatically keeping everything up to date, grouping your items into assemblies for quick access, and allowing you to share an always up to date link to your drawing or document externally. With the Flatter Files iPhone and iPad Application you can now have complete viewer capabilities on your mobile device.

About

Onshape 3D CAD

This professional CAD platform enables real-time collaboration on product design from any device. It offers parametric modeling tools, secure cloud storage, and version control, streamlining the design process for teams and individuals. Supports students and educators with free access for non-commercial projects.

Highlights
  • Parametric modeling tools
  • Real-time team collaboration
  • Cloud-based data management
  • Cross-device access
  • Version control and history
  • Commenting and feedback tools
Read full description

Onshape is a full mechanical CAD platform designed for professional users and extended teams. Create, edit, collaborate, and comment in real time with others from any computer or mobile device with an internet connection (free sign-up required). With Onshape’s secure cloud workspace teams can work together from anywhere on any device without the hassles of file management, IT overhead, and license key distribution, helping engineers focus more on doing their best work. Parametric CAD: • Design parts together in Part Studios with a full suite of parametric modeling tools • Create mechanical Assemblies to capture complex motion Ease of Access: • Create, edit, and view from any computer or mobile device (internet connection required) • Begin a project from one device and seamlessly continue from another Collaboration: • Instantly share your CAD data with your teams and partners. Monitor, change, and revoke permissions at any time • Work together with other users and view changes in real-time as they are made • Use Follow mode to see exactly what your teammate sees and add suggestions using Onshape’s built-in commenting tools Data Management: • Maintain a single source of truth for your data, no more sending around or checking in and out of files • Never worry about losing your work, all of your changes are saved automatically • Explore multiple design ideas in parallel and create professional release and approval processes for your designs Onshape for iOS also features Apple Pencil support for more intuitive sketching, navigation, and precise selection. Onshape proudly supports students and educators free of charge and is available free for non-commercial projects in an open-source public work space. Since Onshape is updated every few weeks with dozens of new features and user-requested enhancements, keep an eye out for update notifications from the Apple App Store.

Screenshots

Flatter Files3 screens
Onshape 3D CAD4 screens

Verdict

The call

The clearest difference is rating: Onshape 3D CAD at 3.5 against Flatter Files's 3.0. Onshape 3D CAD also leads on in-app purchases (none vs 1) and ratings volume (417 vs 2). Flatter Files's advantage is iOS requirement (15.0 vs 18.0). On price, review sentiment, ads and monetization model 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. Flatter Files sells 1 one-off in-app purchase. Onshape 3D CAD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Onshape 3D CAD holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: Onshape 3D CAD has 417 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 50% of Flatter Files's written reviews are positive against 47% of Onshape 3D CAD's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Flatter Files ships an update every 2 months, Onshape 3D CAD every 3 weeks. The most recent releases landed on October 21, 2026 and November 1, 2026 respectively.

Scorecard5 real differences · 5 level
Flatter Files versus Onshape 3D CAD: the parameters behind the verdict, then further details
ParameterFlatter FilesOnshape 3D CAD
PriceFreeFree
Rating3.0 (2 ratings)3.5 (417 ratings) — better
Positive reviews50.0% of reviews — better47.3% of reviews
Number of ratings2417 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size64 MB77 MB
Age rating4+4+
DeveloperCMV Technologies, LLCPTC Inc.

Customer experience

Flatter Files

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Onshape 3D CAD

All ratings417 ratings
Positive61.4%
Neutral6.0%
Negative32.6%
Written reviews425 reviews
Positive47.3%
Neutral6.4%
Negative46.4%

Bugs and requests

Flatter Files

Not enough reviews yet to summarise bugs or requests.

Onshape 3D CAD

Reported bugs

5 issues
  • Frequent crashes and freezes
  • Dimensions not visible/editable
  • Rotation/view controls unreliable
  • Unable to create account
  • Incompatible with older devices

Requested features

5 requests
  • Add keyboard shortcuts
  • Improve dimensioning tools
  • Allow private file storage
  • Optimize for iPad/Apple Pencil
  • Provide better documentation/tutorials

In-app purchases

1 purchases

Flatter Files

One-time1
  • PDF Viewer Upgrade$9.99
None

Onshape 3D CAD

No in-app purchases

Questions

Is Flatter Files free?
Flatter Files is free to download, with in-app purchases available.
Is Onshape 3D CAD free?
Onshape 3D CAD is free to download, with no in-app purchases.
Which has better reviews, Flatter Files or Onshape 3D CAD?
Onshape 3D CAD is rated higher. Flatter Files averages 3.0 out of 5 from 2 ratings, while Onshape 3D CAD averages 3.5 from 417 ratings.
Do Flatter Files or Onshape 3D CAD have ads?
Neither Flatter Files nor Onshape 3D CAD shows ads.
Which is updated more often, Flatter Files or Onshape 3D CAD?
Flatter Files ships an update every 2 months, and Onshape 3D CAD every 3 weeks. Most recently, Flatter Files was updated on October 21, 2026 and Onshape 3D CAD on November 1, 2026.

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