# Douglas 3D Sizing vs OG Scan

The clearest difference is update cadence: Douglas 3D Sizing at every 2 months against OG Scan's every 11 months. Douglas 3D Sizing also leads on iOS requirement (15.0 vs 17.6). 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, OG Scan every 11 months. The most recent releases landed on September 15, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Douglas 3D Sizing | OG Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/og-scan/id6737235783/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | — | Free |
| Size | 126 MB | 106 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [TechMed 3D](https://appshunter.io/developer/964196047) | [Xyken, LLC](https://appshunter.io/developer/1477244346) |

## What reviewers say

### Douglas 3D Sizing

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

**Features:** macOS Compatibility

**In-app purchases:** none


### OG Scan

[App page](https://appshunter.io/ios/app/og-scan/id6737235783)

This free medical app allows practitioners to scan patients' feet using their iPhone or iPad. It enables ordering custom shoes, 3D-printed insoles, and Ankle-Foot Orthoses (AFOs) directly from the developer.

**Highlights:** 3D foot scanning, Custom shoe ordering, Custom insole creation, AFO ordering, Uses TrueDepth camera, No additional hardware needed

**Features:** macOS Compatibility, Vision Pro support

**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 OG Scan free?

OG Scan is free to download, with no in-app purchases.

### Do Douglas 3D Sizing or OG Scan have ads?

Neither Douglas 3D Sizing nor OG Scan shows ads.

### Which is updated more often, Douglas 3D Sizing or OG Scan?

Douglas 3D Sizing ships an update every 2 months, and OG Scan every 11 months. Most recently, Douglas 3D Sizing was updated on September 15, 2026 and OG Scan on September 16, 2026.

---

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