# Authenticator Duo vs Air Tracker, Device Finder Pro

The clearest difference is rating: Air Tracker, Device Finder Pro at 5.0 against Authenticator Duo's 3.9. Air Tracker, Device Finder Pro also leads on monetization model (free with in-app purchases vs subscription). Authenticator Duo's advantage is update cadence (daily vs every 2 months). On price, ratings volume, 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 Tracker, Device Finder Pro 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 Tracker, Device Finder Pro holds the better App Store score, 5.0 against 3.9. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

Authenticator Duo ships an update daily, Air Tracker, Device Finder Pro every 2 months. The most recent releases landed on September 11, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | Authenticator Duo | Air Tracker, Device Finder Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/authenticator-duo-two-factor/id6615062059/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/air-tracker-device-finder-pro/id6642708971/reviews)** |
| Number of ratings | **7** | 3 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 months |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 16 MB | 25 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shawna Margie](https://appshunter.io/developer/1775558385) | [Tabor Cuevas](https://appshunter.io/developer/1763643245) |

## 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 Tracker, Device Finder Pro

[App page](https://appshunter.io/ios/app/air-tracker-device-finder-pro/id6642708971)

Locate nearby Bluetooth devices quickly. Simply open the app and move around to increase the distance score for your lost item. It helps you find your powered-on devices within range.

**Highlights:** Discover Bluetooth devices, Find lost devices, Distance Score indicator, Real-time device list, Subscription options

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| finderWeekly | $6.99 | per 7 days |
| finderMonthly | $14.99 | per month |
| finderAnnualy | $31.99 | per year |


## Frequently asked questions

### Is Authenticator Duo free?

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

### Is Air Tracker, Device Finder Pro free?

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

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

Air Tracker, Device Finder Pro is rated higher. Authenticator Duo averages 3.9 out of 5 from 7 ratings, while Air Tracker, Device Finder Pro averages 5.0 from 3 ratings.

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

Neither Authenticator Duo nor Air Tracker, Device Finder Pro shows ads.

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

Authenticator Duo ships an update daily, and Air Tracker, Device Finder Pro every 2 months. Most recently, Authenticator Duo was updated on September 11, 2026 and Air Tracker, Device Finder Pro on August 15, 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.*