# PDF Scanner Document Converter vs Authenticator App

The clearest difference is ads: Authenticator App at none against PDF Scanner Document Converter's shown. PDF Scanner Document Converter's advantage is review sentiment (32% vs 0%) and ratings volume (534 vs 24). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. PDF Scanner Document Converter sells 5 in-app purchases, starting at $9.99 per month and Authenticator App sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for PDF Scanner Document Converter against 4.5 for Authenticator App. That said, the two scores are not equally well evidenced: PDF Scanner Document Converter has 534 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 32% of PDF Scanner Document Converter's written reviews are positive against 0% of Authenticator App's.

PDF Scanner Document Converter ships an update every 2 weeks, Authenticator App monthly. Both last shipped on September 29, 2026.

## The numbers

| Metric | PDF Scanner Document Converter | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (534 ratings)](https://appshunter.io/ios/app/pdf-scanner-document-converter/id1455198783/reviews) | [4.5 (24 ratings)](https://appshunter.io/ios/app/authenticator-app-duo-secure/id6470662300/reviews) |
| Number of ratings | **534** | 24 |
| Positive reviews | **31.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 148 MB | 101 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [兰 陈](https://appshunter.io/developer/1227702815) | [Apperture Limited](https://appshunter.io/developer/1727867515) |

## What reviewers say

### PDF Scanner Document Converter

[App page](https://appshunter.io/ios/app/pdf-scanner-document-converter/id1455198783)

Transform your phone into a portable scanner to digitize any document. Easily capture receipts, notes, or reports, save them as PDFs, and organize them with custom titles. Share your scanned files via email or save them for later printing.

**Highlights:** Scan any document, Save as PDF, Organize with titles, Automatic scanning, High-quality output, Share via email, Save to gallery

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $9.99 | per month |
| PDF Scanner Converter | $9.99 | per 7 days |
| Weekly Plan | $9.99 | per 7 days |
| PDF Document Scanner | $59.99 | per year |
| Document Scanner App | $69.99 | per year |

**What reviewers like**

- 👍 Easy to use and intuitive interface
- 📄 Converts photos to PDF documents effectively
- 💼 Useful for business and professional needs
- 📧 Allows emailing and faxing scanned documents
- 📁 Keeps PDF file sizes small

**What reviewers complain about**

- 💳 Aggressive subscription billing practices
- ❌ Difficult or impossible to cancel subscription
- 🐛 App crashes frequently
- 📸 Poor scan quality and accuracy
- 🚫 No free trial without payment method

**Reported bugs**

- App crashes on launch
- Scan quality is unreadable
- App keeps asking to sign up despite active account
- Files not emailing properly
- Incompatibility with iPhone 5S

**Requested features**

- Easy in-app cancellation option
- Color scan option
- Genuine free trial without credit card requirement
- Better customer support channels


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-duo-secure/id6470662300)

Enhance digital security with a multi-factor authenticator app. It provides an extra layer of protection for sensitive accounts and information, working offline for reliable access. Protect email, social media, financial accounts, and more with this user-friendly solution.

**Highlights:** Multi-factor authentication, Offline 2FA code generation, Wide service integration, User-friendly interface, Enhanced account protection

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $4.99 | per 7 days |
| Pro Version | $7.99 | per 7 days |
| Pro Version | $14.99 | per month |
| Pro Version | $39.99 | per year |


## Frequently asked questions

### Is PDF Scanner Document Converter free?

PDF Scanner Document Converter is free to download, with in-app purchases available.

### Is Authenticator App free?

Authenticator App is free to download, with in-app purchases available.

### Which has better reviews, PDF Scanner Document Converter or Authenticator App?

PDF Scanner Document Converter and Authenticator App are both rated 4.5 out of 5 on the App Store, from 534 and 24 ratings respectively.

### Do PDF Scanner Document Converter or Authenticator App have ads?

PDF Scanner Document Converter shows ads; Authenticator App does not.

### Which is updated more often, PDF Scanner Document Converter or Authenticator App?

PDF Scanner Document Converter ships an update every 2 weeks, and Authenticator App monthly. Most recently, PDF Scanner Document Converter was updated on September 29, 2026 and Authenticator App on September 29, 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.*