# Auto AI Diagnostics vs Authenticator App

The clearest difference is in-app purchases: Auto AI Diagnostics at none against Authenticator App's 2. Auto AI Diagnostics also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Authenticator App sells 2 in-app purchases, starting at $9.99 per 7 days. Auto AI Diagnostics asks for nothing beyond the download.

Auto AI Diagnostics ships an update weekly, Authenticator App every 11 days. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Auto AI Diagnostics | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 11 days |
| Size | 84 MB | 15 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Matthew Sheaffer](https://appshunter.io/developer/6772241801) | [Rubiklab](https://appshunter.io/developer/1787767335) |

## What reviewers say

### Auto AI Diagnostics

[App page](https://appshunter.io/ios/app/auto-ai-diagnostics/id6772241799)

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

**In-app purchases:** none


### Authenticator App

[App page](https://appshunter.io/ios/app/authenticator-app-nexauth/id6776078454)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $9.99 | per 7 days |
| Yearly Plan | $59.99 | per year |


## Frequently asked questions

### Is Auto AI Diagnostics free?

Auto AI Diagnostics 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 Auto AI Diagnostics or Authenticator App have ads?

Neither Auto AI Diagnostics nor Authenticator App shows ads.

### Which is updated more often, Auto AI Diagnostics or Authenticator App?

Auto AI Diagnostics ships an update weekly, and Authenticator App every 11 days. Most recently, Auto AI Diagnostics was updated on September 9, 2026 and Authenticator App on September 10, 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.*