# 费米扫描 vs Precis3D

The clearest difference is in-app purchases: 费米扫描 at none against Precis3D's 1. 费米扫描 also leads on iOS requirement (15.6 vs 17.0). Precis3D's advantage is update cadence (every 9 days vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Precis3D sells 1 in-app purchase, starting at $4.99 per month. 费米扫描 asks for nothing beyond the download.

费米扫描 ships an update every 7 months, Precis3D every 9 days. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 费米扫描 | Precis3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 9 days** |
| Size | 13 MB | 4 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Shanghai Yunxiao Information Technology Company Limited](https://appshunter.io/developer/1785446567) | [志标 张](https://appshunter.io/developer/6799128609) |

## What reviewers say

### 费米扫描

[App page](https://appshunter.io/ios/app/id6739461027)

**In-app purchases:** none


### Precis3D

[App page](https://appshunter.io/ios/app/precis3d-3d-scanner/id6799294978)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度无限导出 | $4.99 | per month |


## Frequently asked questions

### Is 费米扫描 free?

费米扫描 is free to download, with no in-app purchases.

### Is Precis3D free?

Precis3D is free to download, with in-app purchases available.

### Do 费米扫描 or Precis3D have ads?

Neither 费米扫描 nor Precis3D shows ads.

### Which is updated more often, 费米扫描 or Precis3D?

费米扫描 ships an update every 7 months, and Precis3D every 9 days. Most recently, 费米扫描 was updated on October 30, 2026 and Precis3D on October 29, 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.*