# Authenticator Duo vs Air Detector, Device Finder

The clearest difference is review sentiment: Authenticator Duo at 100% against Air Detector, Device Finder's 0%. Authenticator Duo also leads on rating (5.0 vs 4.4). Air Detector, Device Finder's advantage is monetization model (freemium vs subscription) and update cadence (daily vs every 2 days). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Authenticator Duo sells 2 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.

Authenticator Duo holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 14 and 48 respectively. Written reviews point the same way: 100% of Authenticator Duo's written reviews are positive against 0% of Air Detector, Device Finder's.

Authenticator Duo ships an update every 2 days, Air Detector, Device Finder daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Authenticator Duo | Air Detector, Device Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (14 ratings)](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6504300892/reviews)** | [4.4 (48 ratings)](https://appshunter.io/ios/app/air-detector-device-finder/id6618143623/reviews) |
| Number of ratings | 14 | **48** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Subscription | **Freemium** |
| Size | 20 MB | 21 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Quentin Powell](https://appshunter.io/developer/1751779133) | [Frantz Goelz](https://appshunter.io/developer/1769131275) |

## What reviewers say

### Authenticator Duo

[App page](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6504300892)

Secure your online accounts with this app that generates and stores two-factor authentication codes. It offers end-to-end encryption, Face ID/Touch ID access, and encrypted iCloud backups for easy restoration across devices. Operate securely offline and import existing tokens.

**Highlights:** Generate and store 2FA/MFA tokens, Scan QR codes or manually input codes, End-to-end encryption for all codes, Face ID & Touch ID access, Encrypted iCloud backups, Offline operation, Import existing tokens

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription with trial | $6.99 | per 7 days |
| Weekly subscription | $6.99 | per 7 days |


### 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?

Authenticator Duo is rated higher. Authenticator Duo averages 5.0 out of 5 from 14 ratings, while Air Detector, Device Finder averages 4.4 from 48 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 every 2 days, and Air Detector, Device Finder daily. Most recently, Authenticator Duo was updated on October 30, 2026 and Air Detector, Device Finder on October 31, 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.*