# PaperUno vs Core 3D Viewer

The clearest difference is in-app purchases: PaperUno at none against Core 3D Viewer's 3. PaperUno also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Core 3D Viewer sells 3 in-app purchases, starting at $5.99 per month. PaperUno asks for nothing beyond the download.

PaperUno ships an update every 10 days, Core 3D Viewer every 6 days. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PaperUno | Core 3D Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 6 days** |
| Size | 78 MB | 41 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [炯炯 胡](https://appshunter.io/developer/1774315636) | [Oleksandr Neskoromiuk](https://appshunter.io/developer/6804250160) |

## What reviewers say

### PaperUno

[App page](https://appshunter.io/ios/app/paperuno-grid-and-graph-maker/id6784046887)

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

**In-app purchases:** none


### Core 3D Viewer

[App page](https://appshunter.io/ios/app/core-3d-viewer/id6804250158)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Yearly | $39.99 | per year |
| Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is PaperUno free?

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

### Is Core 3D Viewer free?

Core 3D Viewer is free to download, with in-app purchases available.

### Do PaperUno or Core 3D Viewer have ads?

Neither PaperUno nor Core 3D Viewer shows ads.

### Which is updated more often, PaperUno or Core 3D Viewer?

PaperUno ships an update every 10 days, and Core 3D Viewer every 6 days. Most recently, PaperUno was updated on October 6, 2026 and Core 3D Viewer on September 30, 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.*