# Write on PDF vs WhiteSync

The clearest difference is update cadence: Write on PDF at every 10 days against WhiteSync's every 2 months. WhiteSync's advantage is iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Write on PDF sells 2 in-app purchases, starting at $1.99 per month and WhiteSync sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Write on PDF ships an update every 10 days, WhiteSync every 2 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Write on PDF | WhiteSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (19 ratings)](https://appshunter.io/ios/app/write-on-pdf-white-board/id6475992095/reviews)** | — |
| Number of ratings | **19** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Freemium | — |
| Size | 260 MB | 80 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kairoos Solutions SL](https://appshunter.io/developer/978066434) | [Ech-Chafai Kadri](https://appshunter.io/developer/1789520174) |

## What reviewers say

### Write on PDF

[App page](https://appshunter.io/ios/app/write-on-pdf-white-board/id6475992095)

This app offers a digital whiteboard experience with advanced drawing tools and PDF integration. It allows for freeform sketching, note-taking, and organization with unlimited notebooks and templates. Collaborate or work independently with enhanced security and automatic backups.

**Highlights:** Advanced drawing tools with 7 ink types, Add text boxes, photos, and paper styles, Over 200 templates, Unlimited notebooks and folders, PDF import and export, Apple Pencil and stylus support, Folder and app-wide passcodes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features and AI | $1.99 | per month |
| Full Pro Unlock | $5.99 | one-time |


### WhiteSync

[App page](https://appshunter.io/ios/app/whitesync-whiteboard-drawing/id6742335781)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $1.99 | per 7 days |
| Monthly Pro | $4.99 | per month |
| Yearly Pro | $49.99 | per year |


## Frequently asked questions

### Is Write on PDF free?

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

### Is WhiteSync free?

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

### Do Write on PDF or WhiteSync have ads?

Neither Write on PDF nor WhiteSync shows ads.

### Which is updated more often, Write on PDF or WhiteSync?

Write on PDF ships an update every 10 days, and WhiteSync every 2 months. Most recently, Write on PDF was updated on October 24, 2026 and WhiteSync on October 3, 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.*