# PreFlight vs Authenticator App

The clearest difference is update cadence: Authenticator App at every 11 days against PreFlight's every 3 months. Authenticator App also leads on iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. PreFlight sells 1 one-off in-app purchase and Authenticator App sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

PreFlight ships an update every 3 months, Authenticator App every 11 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | PreFlight | Authenticator App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Size | 6 MB | 15 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Scott Manley](https://appshunter.io/developer/1864388985) | [Rubiklab](https://appshunter.io/developer/1787767335) |

## What reviewers say

### PreFlight

[App page](https://appshunter.io/ios/app/preflight-drone-checklist/id6759703555)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PreFlight Pro | $1.99 | one-time |


### 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 PreFlight free?

PreFlight 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 PreFlight or Authenticator App have ads?

Neither PreFlight nor Authenticator App shows ads.

### Which is updated more often, PreFlight or Authenticator App?

PreFlight ships an update every 3 months, and Authenticator App every 11 days. Most recently, PreFlight was updated on November 5, 2026 and Authenticator App on November 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.*