# Douglas 3D Sizing vs IOL3D LIDAR

The clearest difference is iOS requirement: Douglas 3D Sizing at 15.0 against IOL3D LIDAR's 17.2. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Douglas 3D Sizing | IOL3D LIDAR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 126 MB | 32 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [TechMed 3D](https://appshunter.io/developer/964196047) | [James Ludlow](https://appshunter.io/developer/1019330489) |

## What reviewers say

### Douglas 3D Sizing

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

**Features:** macOS Compatibility

**In-app purchases:** none


### IOL3D LIDAR

[App page](https://appshunter.io/ios/app/iol3d-lidar/id6484272450)

**Features:** macOS Compatibility

**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 IOL3D LIDAR free?

IOL3D LIDAR is free to download, with no in-app purchases.

### Do Douglas 3D Sizing or IOL3D LIDAR have ads?

Neither Douglas 3D Sizing nor IOL3D LIDAR shows ads.

### Which is updated more often, Douglas 3D Sizing or IOL3D LIDAR?

Douglas 3D Sizing ships an update every 2 months, and IOL3D LIDAR every 2 months. Most recently, Douglas 3D Sizing was updated on October 10, 2026 and IOL3D LIDAR on October 7, 2026.

---

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