# Authenticator App vs PDF Scanner Document OCR Tool

The clearest difference is iOS requirement: PDF Scanner Document OCR Tool at 15.1 against Authenticator App's 17.0. On price, update cadence, ads 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.

Authenticator App ships an update every 4 months, PDF Scanner Document OCR Tool every 5 months. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Authenticator App | PDF Scanner Document OCR Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 4 months** | Every 5 months |
| Size | 53 MB | 76 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bodrya Hardikkummar Vinodbhai](https://appshunter.io/developer/1469774348) | [Jay Shah](https://appshunter.io/developer/1778283174) |

## What reviewers say

### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-backup/id6741478724)

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

**In-app purchases:** none


### PDF Scanner Document OCR Tool

[App page](https://appshunter.io/ios/app/pdf-scanner-document-ocr-tool/id6753100427)

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

**In-app purchases:** none


## Frequently asked questions

### Is Authenticator App free?

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

### Is PDF Scanner Document OCR Tool free?

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

### Do Authenticator App or PDF Scanner Document OCR Tool have ads?

Both Authenticator App and PDF Scanner Document OCR Tool show ads.

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

Authenticator App ships an update every 4 months, and PDF Scanner Document OCR Tool every 5 months. Most recently, Authenticator App was updated on October 2, 2026 and PDF Scanner Document OCR Tool on October 4, 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.*