# HYDAC Tools vs PDF Scanner

The clearest difference is ads: HYDAC Tools at none against PDF Scanner's shown. HYDAC Tools also leads on monetization model (free vs ad-supported) and iOS requirement (13.0 vs 16.0). PDF Scanner's advantage is update cadence (every 3 days vs every 13 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for HYDAC Tools against 5.0 for PDF Scanner. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

HYDAC Tools ships an update every 13 months, PDF Scanner every 3 days. The most recent releases landed on October 7, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | HYDAC Tools | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hydac-tools/id1396834045/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-scanner-docs-to-pdf/id6777173458/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Every 3 days** |
| Monetization | **Free** | Ad-supported |
| Size | 12 MB | 11 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HYDAC Pty. Ltd.](https://appshunter.io/developer/1396834044) | [Ali Nawaz](https://appshunter.io/developer/1881323809) |

## What reviewers say

### HYDAC Tools

[App page](https://appshunter.io/ios/app/hydac-tools/id1396834045)

This app provides engineers and project managers with tools for fluid power, motion control, and automation. It offers features like cylinder calculations, unit conversions, filter sizing, and fluid care information to enhance daily productivity and efficiency.

**Highlights:** Cylinder calculations, Unit conversions, Filter sizing software, Fluid care information, Hydraulic pump selection, Brochure downloads, Online tools

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-docs-to-pdf/id6777173458)

Transform your mobile device into a powerful document scanner and PDF editor. Digitize receipts, contracts, and IDs, then easily edit, organize, and share them. All your documents are stored securely on your device for complete privacy.

**Highlights:** Multi-page document scanning, Create PDFs from photos, text, and webpages, Edit PDFs with signatures, text, and watermarks, Merge, split, and export PDF pages, On-device OCR for text extraction, Organize and search all your PDFs

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

**In-app purchases:** none


## Frequently asked questions

### Is HYDAC Tools free?

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

### Is PDF Scanner free?

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

### Which has better reviews, HYDAC Tools or PDF Scanner?

HYDAC Tools and PDF Scanner are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do HYDAC Tools or PDF Scanner have ads?

PDF Scanner shows ads; HYDAC Tools does not.

### Which is updated more often, HYDAC Tools or PDF Scanner?

HYDAC Tools ships an update every 13 months, and PDF Scanner every 3 days. Most recently, HYDAC Tools was updated on October 7, 2026 and PDF Scanner on September 20, 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.*