# QNAP Authenticator vs Cairnly

The clearest difference is in-app purchases: QNAP Authenticator at none against Cairnly's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cairnly sells 1 one-off in-app purchase. QNAP Authenticator asks for nothing beyond the download.

QNAP Authenticator ships an update every 3 months, Cairnly every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | QNAP Authenticator | Cairnly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (13 ratings)](https://appshunter.io/ios/app/qnap-authenticator/id1620302345/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 44 MB | 7 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [QNAP Systems, Inc.](https://appshunter.io/developer/355826923) | [Gani Tunc](https://appshunter.io/developer/6781338503) |

## What reviewers say

### QNAP Authenticator

[App page](https://appshunter.io/ios/app/qnap-authenticator/id1620302345)

Enhance your account security with this mobile app that provides 2-Step Verification and Passwordless Login. It offers multiple verification methods, including login approval, QR code scanning, and online codes, with TOTP support for offline use and third-party accounts.

**Highlights:** 2-Step Verification, Passwordless Login, Login Approval, QR Code Verification, Online Verification Code, Time-based One-Time Password (TOTP), Offline TOTP generation

**In-app purchases:** none


### Cairnly

[App page](https://appshunter.io/ios/app/cairnly-receipt-vault/id6792815920)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cairnly Pro Lifetime | $8.99 | one-time |


## Frequently asked questions

### Is QNAP Authenticator free?

QNAP Authenticator is free to download, with no in-app purchases.

### Is Cairnly free?

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

### Do QNAP Authenticator or Cairnly have ads?

Neither QNAP Authenticator nor Cairnly shows ads.

### Which is updated more often, QNAP Authenticator or Cairnly?

QNAP Authenticator ships an update every 3 months, and Cairnly every 2 months. Most recently, QNAP Authenticator was updated on October 24, 2026 and Cairnly on October 25, 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.*