# AI EPaper vs Viewer3D

The clearest difference is price: AI EPaper at Free against Viewer3D's $0.99. AI EPaper also leads on update cadence (every 6 days vs every 3 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

AI EPaper is free to download; Viewer3D costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AI EPaper ships an update every 6 days, Viewer3D every 3 months. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | AI EPaper | Viewer3D |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 months |
| Size | 34 MB | 24 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Shenzhen Swish Technology Co., Ltd](https://appshunter.io/developer/1837103921) | [北京秤鑫科技有限公司](https://appshunter.io/developer/1865113112) |

## What reviewers say

### AI EPaper

[App page](https://appshunter.io/ios/app/ai-epaper/id6751833644)

**Features:** Vision Pro support

**In-app purchases:** none


### Viewer3D

[App page](https://appshunter.io/ios/app/viewer3d/id6757183916)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI EPaper free?

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

### Is Viewer3D free?

Viewer3D costs $0.99, with no in-app purchases.

### Do AI EPaper or Viewer3D have ads?

Neither AI EPaper nor Viewer3D shows ads.

### Which is updated more often, AI EPaper or Viewer3D?

AI EPaper ships an update every 6 days, and Viewer3D every 3 months. Most recently, AI EPaper was updated on October 15, 2026 and Viewer3D on October 18, 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.*