# PDFSlimmer vs Authenticator App

The clearest difference is device support: Authenticator App at 3 against PDFSlimmer's 1. Authenticator App also leads on iOS requirement (13.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. PDFSlimmer sells 1 one-off in-app purchase and Authenticator App sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | PDFSlimmer | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 1 MB | 50 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andrei Isac](https://appshunter.io/developer/1513235964) | [Selcuk Gedikkaya](https://appshunter.io/developer/1885224016) |

## What reviewers say

### PDFSlimmer

[App page](https://appshunter.io/ios/app/pdfslimmer/id6755295969)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFSlimmer PRO | $2.99 | one-time |


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-mfa-2fa/id6760597863)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator App Weekly Premium | $7.99 | per 7 days |
| Authenticator App Weekly Premium | $9.99 | per 7 days |
| Authenticator App Yearly Premium | $39.99 | per year |
| Authenticator App Yearly Premium | $49.99 | per year |


## Frequently asked questions

### Is PDFSlimmer free?

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

### Is Authenticator App free?

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

### Do PDFSlimmer or Authenticator App have ads?

Neither PDFSlimmer nor Authenticator App shows ads.

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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.*