# PDF Reader vs Authenticator

The clearest difference is ads: Authenticator at none against PDF Reader's shown. PDF Reader's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. PDF Reader sells 2 in-app purchases, starting at $3.99 per month and Authenticator sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PDF Reader ships an update every 3 months, Authenticator every 5 months. The most recent releases landed on October 3, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | PDF Reader | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (61 ratings)](https://appshunter.io/ios/app/authenticator-secure-2fa-mfa/id6748400576/reviews)** |
| Number of ratings | — | **61** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 23 MB | 22 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Smit Pipaliya](https://appshunter.io/developer/1646406919) | [DEDUSHKA DEVELOPMENT - FZCO](https://appshunter.io/developer/1895610448) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-pdf-viewer/id6443484704)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Reader & Editor Monthly | $3.99 | per month |
| PDF Reader & Editor Yearly | $27.49 | per year |


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-secure-2fa-mfa/id6748400576)

This app provides two-factor authentication to secure your online accounts. It generates time-based one-time passwords for various services, offering features like cloud backup, biometric protection, and offline code generation. Protect your digital life with this reliable and user-friendly security solution.

**Highlights:** Time-based one-time passwords (TOTP), Secure cloud backup and sync, Biometric and PIN protection, QR code scanner for setup, Offline code generation, Support for multiple accounts

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $6.99 | per 7 days |
| Monthly | $19.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is PDF Reader free?

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

### Is Authenticator free?

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

### Do PDF Reader or Authenticator have ads?

PDF Reader shows ads; Authenticator does not.

### Which is updated more often, PDF Reader or Authenticator?

PDF Reader ships an update every 3 months, and Authenticator every 5 months. Most recently, PDF Reader was updated on October 3, 2026 and Authenticator on October 5, 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.*