# Douglas 3D Sizing vs Fabtech CAD

The clearest difference is update cadence: Douglas 3D Sizing at every 2 months against Fabtech CAD's every 9 months. Fabtech CAD's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Douglas 3D Sizing ships an update every 2 months, Fabtech CAD every 9 months. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Douglas 3D Sizing | Fabtech CAD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Size | 126 MB | 51 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [TechMed 3D](https://appshunter.io/developer/964196047) | [Comb O&P](https://appshunter.io/developer/1508576483) |

## What reviewers say

### Douglas 3D Sizing

[App page](https://appshunter.io/ios/app/douglas-3d-sizing/id1593445668)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fabtech CAD

[App page](https://appshunter.io/ios/app/fabtech-cad/id1593908010)

**In-app purchases:** none


## Frequently asked questions

### Is Douglas 3D Sizing free?

Douglas 3D Sizing is free to download, with no in-app purchases.

### Is Fabtech CAD free?

Fabtech CAD is free to download, with no in-app purchases.

### Do Douglas 3D Sizing or Fabtech CAD have ads?

Neither Douglas 3D Sizing nor Fabtech CAD shows ads.

### Which is updated more often, Douglas 3D Sizing or Fabtech CAD?

Douglas 3D Sizing ships an update every 2 months, and Fabtech CAD every 9 months. Most recently, Douglas 3D Sizing was updated on October 10, 2026 and Fabtech CAD on October 14, 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.*