# Authenticator Duo vs Air Detector, Device Finder

The clearest difference is monetization model: Air Detector, Device Finder at freemium against Authenticator Duo's subscription. Air Detector, Device Finder also leads on rating (4.3 vs 3.9) and ratings volume (45 vs 7). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Authenticator Duo sells 3 in-app purchases, starting at $6.99 per 7 days and Air Detector, Device Finder sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Air Detector, Device Finder holds the better App Store score, 4.3 against 3.9. That said, the two scores are not equally well evidenced: Air Detector, Device Finder has 45 ratings behind it against 7, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly daily. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Authenticator Duo | Air Detector, Device Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6615062059/reviews) | **[4.3 (45 ratings)](https://appshunter.io/ios/app/air-detector-device-finder/id6618143623/reviews)** |
| Number of ratings | 7 | **45** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Daily | Daily |
| Monetization | Subscription | **Freemium** |
| Size | 16 MB | 21 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shawna Margie](https://appshunter.io/developer/1775558385) | [Frantz Goelz](https://appshunter.io/developer/1769131275) |

## What reviewers say

### Authenticator Duo

[App page](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6615062059)

This app provides robust two-factor authentication to secure your online accounts. It offers easy setup, management, and backup/sync features using advanced security protocols for peace of mind.

**Highlights:** Two-Factor Authentication (2FA), Easy Setup & Management, Backup & Sync, Advanced Security Protocols, User-Friendly Interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro + 3 Days Trial | $6.99 | per 7 days |
| Monthly Pro | $19.99 | per month |
| Annual Pro | $49.99 | per year |


### Air Detector, Device Finder

[App page](https://appshunter.io/ios/app/air-detector-device-finder/id6618143623)

Locate misplaced Bluetooth-enabled devices with real-time distance tracking and customizable alerts. This app helps you quickly find items like headphones, watches, and phones, ensuring your valuables are always within reach.

**Highlights:** Bluetooth device detection, Real-time distance meter, Quick item recovery, Intuitive interface, Customizable notifications, Device search history

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FinderWeekly | $6.99 | per 7 days |
| FinderMonthly | $14.99 | per month |
| FinderYearly | $31.99 | per year |


## Frequently asked questions

### Is Authenticator Duo free?

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

### Is Air Detector, Device Finder free?

Air Detector, Device Finder is free to download, with in-app purchases available.

### Which has better reviews, Authenticator Duo or Air Detector, Device Finder?

Air Detector, Device Finder is rated higher. Authenticator Duo averages 3.9 out of 5 from 7 ratings, while Air Detector, Device Finder averages 4.3 from 45 ratings.

### Do Authenticator Duo or Air Detector, Device Finder have ads?

Neither Authenticator Duo nor Air Detector, Device Finder shows ads.

### Which is updated more often, Authenticator Duo or Air Detector, Device Finder?

Authenticator Duo ships an update daily, and Air Detector, Device Finder daily. Most recently, Authenticator Duo was updated on September 11, 2026 and Air Detector, Device Finder on September 8, 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.*