# Flatter Files vs Onshape 3D CAD

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.

Both are free to download. Flatter Files sells 1 one-off in-app purchase. Onshape 3D CAD asks for nothing beyond the download.

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.

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.

## The numbers

| Metric | Flatter Files | Onshape 3D CAD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/flatter-files/id522498741/reviews) | **[3.5 (417 ratings)](https://appshunter.io/ios/app/onshape-3d-cad/id923421284/reviews)** |
| Number of ratings | 2 | **417** |
| Positive reviews | **50.0% of reviews** | 47.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 64 MB | 77 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CMV Technologies, LLC](https://appshunter.io/developer/384233214) | [PTC Inc.](https://appshunter.io/developer/501201404) |

## What reviewers say

### Flatter Files

[App page](https://appshunter.io/ios/app/flatter-files/id522498741)

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:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Viewer Upgrade | $9.99 | one-time |


### Onshape 3D CAD

[App page](https://appshunter.io/ios/app/onshape-3d-cad/id923421284)

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Powerful CAD features
- 🌐 Accessible from any device
- 👍 Intuitive interface
- 💡 Great for on-site work
- 🌟 Exceptional for a free app

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 👎 Unintuitive and clunky UI
- 🔒 Requires account sign-up
- 💰 Expensive paid plans
- 🔍 Difficult to find/use key features

**Reported bugs**

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

**Requested features**

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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*