# WePrevent vs 3DM Viewer

The clearest difference is iOS requirement: 3DM Viewer at 14.0 against WePrevent's 16.0. 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.

WePrevent ships an update every 4 months, 3DM Viewer every 8 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | WePrevent | 3DM Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Size | 9 MB | 38 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WePrevent](https://appshunter.io/developer/1091604325) | [锡敏 石](https://appshunter.io/developer/1015833793) |

## What reviewers say

### WePrevent

[App page](https://appshunter.io/ios/app/weprevent/id1091604326)

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

**In-app purchases:** none


### 3DM Viewer

[App page](https://appshunter.io/ios/app/3dm-viewer/id6730112624)

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

**In-app purchases:** none


## Frequently asked questions

### Is WePrevent free?

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

### Is 3DM Viewer free?

3DM Viewer is free to download, with no in-app purchases.

### Do WePrevent or 3DM Viewer have ads?

Neither WePrevent nor 3DM Viewer shows ads.

### Which is updated more often, WePrevent or 3DM Viewer?

WePrevent ships an update every 4 months, and 3DM Viewer every 8 months. Most recently, WePrevent was updated on October 29, 2026 and 3DM Viewer on October 27, 2026.

---

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