# PDF Vault vs WorkOne

The clearest difference is in-app purchases: WorkOne at none against PDF Vault's 2. WorkOne also leads on iOS requirement (16.0 vs 18.1). PDF Vault's advantage is update cadence (fortnightly vs every 14 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. PDF Vault sells 2 in-app purchases, starting at $4.99 per month. WorkOne asks for nothing beyond the download.

PDF Vault ships an update fortnightly, WorkOne every 14 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | PDF Vault | WorkOne |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 14 months |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 6 MB |
| Requires iOS | 18.1 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dmytro Skorokhod](https://appshunter.io/developer/994177751) | [Ho Won Kim](https://appshunter.io/developer/1497463713) |

## What reviewers say

### PDF Vault

[App page](https://appshunter.io/ios/app/pdf-vault-document-app/id1599303874)

This ultra-lightweight application offers a comprehensive suite of PDF tools, including text-to-speech functionality, digital signing, document scanning, organization, and instant translation. It's designed for efficiency and ease of use, saving device space while enhancing productivity for work, study, or personal tasks.

**Highlights:** Text-to-speech for PDFs, Digital document signing, Scan paper documents to PDF, Organize and manage PDF files, Instant document translation, Ultra-lightweight and fast

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mox PDF Tool Unlimited Monthly | $4.99 | per month |
| Mox PDF Tool Unlimited Annually | $19.99 | per year |


### WorkOne

[App page](https://appshunter.io/ios/app/workone/id6502869186)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF Vault free?

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

### Is WorkOne free?

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

### Do PDF Vault or WorkOne have ads?

Neither PDF Vault nor WorkOne shows ads.

### Which is updated more often, PDF Vault or WorkOne?

PDF Vault ships an update fortnightly, and WorkOne every 14 months. Most recently, PDF Vault was updated on October 12, 2026 and WorkOne on October 9, 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.*