# Waterloo Athan vs Pdflex

The clearest difference is ads: Waterloo Athan at none against Pdflex's shown. Waterloo Athan also leads on iOS requirement (10.0 vs 15.1). Pdflex's advantage is update cadence (every 2 weeks vs every 31 months). On price, in-app purchases and device support there is nothing between them.

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

Waterloo Athan ships an update every 31 months, Pdflex every 2 weeks. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Waterloo Athan | Pdflex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 31 months | **Every 2 weeks** |
| Size | 13 MB | 42 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Abdullah](https://appshunter.io/developer/873693566) | [Huseyin Berat Ylmaz](https://appshunter.io/developer/1896499902) |

## What reviewers say

### Waterloo Athan

[App page](https://appshunter.io/ios/app/waterloo-athan/id892073912)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pdflex

[App page](https://appshunter.io/ios/app/pdflex-pdf-editor-and-scanner/id6776406284)

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

**In-app purchases:** none


## Frequently asked questions

### Is Waterloo Athan free?

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

### Is Pdflex free?

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

### Do Waterloo Athan or Pdflex have ads?

Pdflex shows ads; Waterloo Athan does not.

### Which is updated more often, Waterloo Athan or Pdflex?

Waterloo Athan ships an update every 31 months, and Pdflex every 2 weeks. Most recently, Waterloo Athan was updated on October 10, 2026 and Pdflex on October 24, 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.*