# QNAP Authenticator vs Clean Scan

The clearest difference is rating: QNAP Authenticator at 2.0 against Clean Scan's 1.0. QNAP Authenticator also leads on in-app purchases (none vs 1) and review sentiment (20% vs 0%). On price, update cadence, ads and device support there is nothing between them.

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

QNAP Authenticator holds the better App Store score, 2.0 against 1.0. That said, the two scores are not equally well evidenced: QNAP Authenticator has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 20% of QNAP Authenticator's written reviews are positive against 0% of Clean Scan's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 17, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | QNAP Authenticator | Clean Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (12 ratings)](https://appshunter.io/ios/app/qnap-authenticator/id1620302345/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/clean-scan-pdf-and-ocr/id6762363571/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | **20.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 44 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QNAP Systems, Inc.](https://appshunter.io/developer/355826923) | [David Mendez](https://appshunter.io/developer/1869594292) |

## 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


### Clean Scan

[App page](https://appshunter.io/ios/app/clean-scan-pdf-and-ocr/id6762363571)

Effortlessly scan documents and convert them into searchable PDFs with on-device OCR. Organize your files with automatic filing, tags, and folder management. Enjoy a private scanning experience with no cloud or tracking.

**Highlights:** On-device OCR for searchable PDFs, Automatic edge detection and perspective correction, Multi-page document scanning, Automatic year & month filing, Tagging and filtering, Offline text recognition, App lock with Face ID/Touch ID

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $4.99 | one-time |


## Frequently asked questions

### Is QNAP Authenticator free?

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

### Is Clean Scan free?

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

### Which has better reviews, QNAP Authenticator or Clean Scan?

QNAP Authenticator is rated higher. QNAP Authenticator averages 2.0 out of 5 from 12 ratings, while Clean Scan averages 1.0 from 1 ratings.

### Do QNAP Authenticator or Clean Scan have ads?

Neither QNAP Authenticator nor Clean Scan shows ads.

### Which is updated more often, QNAP Authenticator or Clean Scan?

QNAP Authenticator ships an update every 3 months, and Clean Scan every 3 months. Most recently, QNAP Authenticator was updated on October 17, 2026 and Clean Scan on October 18, 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.*