# Authenticator App vs PDF Converter・Doc Scanner

The clearest difference is update cadence: PDF Converter・Doc Scanner at every 2 months against Authenticator App's every 8 months. Authenticator App's advantage is ratings volume (210 vs 28). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Authenticator App sells 15 in-app purchases, starting at $4.99 per 7 days and PDF Converter・Doc Scanner sells 4 in-app purchases, starting at $6.99 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 — 4.3 for Authenticator App against 4.3 for PDF Converter・Doc Scanner. That said, the two scores are not equally well evidenced: Authenticator App has 210 ratings behind it against 28, so its average is the more settled of the two.

Authenticator App ships an update every 8 months, PDF Converter・Doc Scanner every 2 months. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Authenticator App | PDF Converter・Doc Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (210 ratings)](https://appshunter.io/ios/app/authenticator-app-2famfaotp/id6480137982/reviews)** | [4.3 (28 ratings)](https://appshunter.io/ios/app/pdf-converterdoc-scanner/id6670748953/reviews) |
| Number of ratings | **210** | 28 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 48 MB | 83 MB |
| Requires iOS | **17** | 18 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Authentication Services](https://appshunter.io/developer/1880352966) | [Nikolai Ivanenko](https://appshunter.io/developer/1855826089) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2famfaotp/id6480137982)

This app generates secure two-factor authentication tokens to protect your online accounts. It offers encrypted cloud backups and multi-device synchronization for easy recovery and access. The app works offline and can be secured with a PIN or biometric lock.

**Highlights:** Secure 2FA token generation, Encrypted cloud backups, Multi-device synchronization, Offline functionality, PIN and biometric lock

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Digital Security Authenticator | $4.99 | per 7 days |
| Enhance online security | $5.99 | per 7 days |
| Generate one-time passwords | $5.99 | per 7 days |
| Smart Authenticator | $6.99 | per 7 days |
| One-Time Password Generator | $7.99 | per 7 days |
| Secure Code Generator | $7.99 | per 7 days |
| One-Time Security Code App | $9.99 | per 7 days |
| Smart Code Authenticator | $11.99 | per 7 days |
| 2FA App | $14.99 | per month |
| Secure Verification Generator | $19.99 | per month |
| Secure your accounts | $19.99 | per month |
| Account protection Authenticator | $29.99 | per month |
| Secure your accounts | $39.99 | per year |
| Safe Login Code Generator | $49.99 | per year |
| One-Time Password | $59.99 | per year |


### PDF Converter・Doc Scanner

[App page](https://appshunter.io/ios/app/pdf-converterdoc-scanner/id6670748953)

Easily scan physical documents and convert various file types, images, and web pages into professional PDF formats. Organize, edit, and share your important content quickly and efficiently.

**Highlights:** Smart document scanning, Create PDFs from various sources, Convert multiple file types, Edit PDFs before saving, Instant sharing options

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Convert to PDF Docs & Pictures | $6.99 | per 7 days |
| Convert to PDF Docs & Pictures | $6.99 | per 7 days |
| Image & Photo to PDF・Converter | $19.99 | per month |
| Image & Photo to PDF・Converter | $39.99 | per year |


## Frequently asked questions

### Is Authenticator App free?

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

### Is PDF Converter・Doc Scanner free?

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

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

Authenticator App is rated higher. Authenticator App averages 4.3 out of 5 from 210 ratings, while PDF Converter・Doc Scanner averages 4.3 from 28 ratings.

### Do Authenticator App or PDF Converter・Doc Scanner have ads?

Neither Authenticator App nor PDF Converter・Doc Scanner shows ads.

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

Authenticator App ships an update every 8 months, and PDF Converter・Doc Scanner every 2 months. Most recently, Authenticator App was updated on October 19, 2026 and PDF Converter・Doc Scanner on October 7, 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.*