# PDF vs Vellum

The clearest difference is update cadence: Vellum at weekly against PDF's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PDF sells 3 in-app purchases, starting at $3.99 per month and Vellum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

PDF ships an update every 3 weeks, Vellum weekly. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | PDF | Vellum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 12 MB | 44 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [爱华 刘](https://appshunter.io/developer/1797362038) | [四扬 叶](https://appshunter.io/developer/6797699915) |

## What reviewers say

### PDF

[App page](https://appshunter.io/ios/app/pdf-pro-editor-and-scanner/id6797690967)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF-PRO Monthly | $3.99 | per month |
| PDF-PRO Yearly (3-Day Trial) | $24.99 | per year |
| PDF-PRO Lifetime Pass | $59.99 | one-time |


### Vellum

[App page](https://appshunter.io/ios/app/vellum-topic-notes-and-ideas/id6799964763)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vellum pro lifetime | $2.99 | one-time |


## Frequently asked questions

### Is PDF free?

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

### Is Vellum free?

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

### Do PDF or Vellum have ads?

Neither PDF nor Vellum shows ads.

### Which is updated more often, PDF or Vellum?

PDF ships an update every 3 weeks, and Vellum weekly. Most recently, PDF was updated on October 31, 2026 and Vellum on November 6, 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.*