# EOS vs Authenticator app

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

Both are free to download. Authenticator app sells 1 in-app purchase, starting at $9.99 per 7 days. EOS asks for nothing beyond the download.

EOS ships an update every 3 weeks, Authenticator app weekly. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | EOS | Authenticator app |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 52 MB | 12 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [NexTier Oilfield Solutions, Inc.](https://appshunter.io/developer/1532104518) | [AttestNet](https://appshunter.io/developer/1896768336) |

## What reviewers say

### EOS

[App page](https://appshunter.io/ios/app/eos-mobile/id6753316771)

**Features:** macOS Compatibility

**In-app purchases:** none


### Authenticator app

[App page](https://appshunter.io/ios/app/authenticator-app-2fa-mfa/id6781687744)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CardVault Weekly 3 days Trial | $9.99 | per 7 days |


## Frequently asked questions

### Is EOS free?

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

### Is Authenticator app free?

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

### Do EOS or Authenticator app have ads?

Neither EOS nor Authenticator app shows ads.

### Which is updated more often, EOS or Authenticator app?

EOS ships an update every 3 weeks, and Authenticator app weekly. Most recently, EOS was updated on October 3, 2026 and Authenticator app on October 1, 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.*