# PDF workbench vs OTPx

The clearest difference is in-app purchases: OTPx at none against PDF workbench's 2. OTPx also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). PDF workbench's advantage is device support (3 vs 1). On price and iOS requirement there is nothing between them.

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

PDF workbench ships an update every 2 weeks, OTPx every 4 days. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PDF workbench | OTPx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pdf-workbench-convert-and-edit/id6742145977/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 142 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NOVASCRIPTUM LLC](https://appshunter.io/developer/1797063657) | [BizFin](https://appshunter.io/developer/1815697283) |

## What reviewers say

### PDF workbench

[App page](https://appshunter.io/ios/app/pdf-workbench-convert-and-edit/id6742145977)

Edit, convert, and manage PDF documents with a comprehensive suite of tools. Transform images and documents into PDFs, extract text, merge files, and secure your documents with passwords and watermarks. Offers batch processing and an intuitive interface for efficient mobile PDF management.

**Highlights:** Convert images and documents to PDF, Convert PDFs to Word, JPEG, PNG, Merge and split PDF files, Add digital signatures and watermarks, Password protection for PDFs, Compress PDF file size, OCR text extraction

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $49.99 | per year |


### OTPx

[App page](https://appshunter.io/ios/app/otpx-secure-otp-sharing/id6746192885)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDF workbench free?

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

### Is OTPx free?

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

### Do PDF workbench or OTPx have ads?

PDF workbench shows ads; OTPx does not.

### Which is updated more often, PDF workbench or OTPx?

PDF workbench ships an update every 2 weeks, and OTPx every 4 days. Most recently, PDF workbench was updated on October 24, 2026 and OTPx on October 8, 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.*