# Frontiers On Site vs PDF Reader

The clearest difference is in-app purchases: Frontiers On Site at none against PDF Reader's 1. Frontiers On Site also leads on ads (none vs shown) and iOS requirement (12.4 vs 16). PDF Reader's advantage is update cadence (every 2 weeks vs every 5 weeks). On price and device support there is nothing between them.

Both are free to download. PDF Reader sells 1 in-app purchase, starting at $14.99 per 7 days. Frontiers On Site asks for nothing beyond the download.

Frontiers On Site ships an update every 5 weeks, PDF Reader every 2 weeks. The most recent releases landed on May 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Frontiers On Site | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (129 ratings)](https://appshunter.io/ios/app/pdf-reader-scanner-app/id6739529347/reviews)** |
| Number of ratings | — | **129** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 13 MB | 81 MB |
| Requires iOS | **12.4** | 16 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [O PROJECTS MINA EZZAT AND PARTNER](https://appshunter.io/developer/1362663353) | [Tech Nest](https://appshunter.io/developer/1703040252) |

## What reviewers say

### Frontiers On Site

[App page](https://appshunter.io/ios/app/frontiers-on-site/id1635791013)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-scanner-app/id6739529347)

Scan, convert, and manage documents on your mobile device. Easily transform images into PDFs, extract text with OCR, and share or print your files. Streamline your document workflow with this all-in-one scanner and editor.

**Highlights:** Image to PDF conversion, Document scanning, Text extraction (OCR), Email document sharing, Print from device, PDF editing, Add/manage pages

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Rader Pro Experience | $14.99 | per 7 days |


## Frequently asked questions

### Is Frontiers On Site free?

Frontiers On Site is free to download, with no in-app purchases.

### Is PDF Reader free?

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

### Do Frontiers On Site or PDF Reader have ads?

PDF Reader shows ads; Frontiers On Site does not.

### Which is updated more often, Frontiers On Site or PDF Reader?

Frontiers On Site ships an update every 5 weeks, and PDF Reader every 2 weeks. Most recently, Frontiers On Site was updated on May 16, 2026 and PDF Reader on September 23, 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.*