QNAP Authenticator vs Clean Scan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
QNAP Authenticator
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.
- 2-Step Verification
- Passwordless Login
- Login Approval
- QR Code Verification
- Online Verification Code
- Time-based One-Time Password (TOTP)
- Offline TOTP generation
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QNAP Authenticator is a free app that adds an extra layer of security to your accounts by using your mobile device to verify your login. You can authenticate your identity using 2-Step Verification or Passwordless Login and choose from multiple verification methods. 【Requirements】 - QNAP NAS running QTS 5.1.0 (or later) - iOS 15 (or later) 【Major features of QNAP Authenticator】 - Supports 2-Step Verification and Passwordless Login - Supports scanning a QR code to quickly add an account - Supports the following verification methods: 1.Login Approval: Approve a login request with just a tap 2.QR Code: Scan a QR code to verify a login request 3.Online Verification Code: Receive a code sent from your QNAP device for verification 4.Time-based One-Time Password (TOTP): Generate a code automatically renewed for verification Login Approval, QR Code, and Online Verification Code require a connection to your NAS, whereas TOTP can work offline. This method also supports verifying third-party accounts from Google, Microsoft, Facebook, GitHub, and other service providers that have implemented their authentication following the TOTP standard.
Clean Scan
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.
- 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
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Scan a receipt, a contract, a form — and get a clean, searchable PDF in seconds. Most scanner apps interrupt you with ads, or lock the basics behind a monthly subscription. Clean Scan asks once, then stays out of your way. SCAN • Automatic edge detection and perspective correction • Multi-page documents in one PDF • Choose A4 or US Letter, and how much resolution to keep FIND ANYTHING • On-device text recognition reads every page • Search words inside your scans, not just file names • Exported PDFs are searchable in Files, Mail, Preview and Acrobat too STAY ORGANIZED • Turn on Automatic Year & Month Filing to create folders and file new scans by date • Browse nested folders, or scan from the folder you are viewing • Tag documents and filter by tag • Reorder pages, delete a bad one, scan a replacement • Import existing PDFs and photos from Files or Photos PRIVATE BY DESIGN • Everything happens on your device — no cloud, no account, no tracking • Text recognition runs offline • Lock the app behind Face ID, Touch ID or your passcode PAY ONCE Three documents are free. One purchase removes the limit for good — no renewals, nothing to cancel. PDF export, sharing, page editing and text recognition stay free for everyone.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | QNAP Authenticator | Clean Scan |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (12 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 20.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 12 — better | 1 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 44 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | QNAP Systems, Inc. | David Mendez |
Customer experience
QNAP Authenticator
Clean Scan
In-app purchases
QNAP Authenticator
No in-app purchases
Clean Scan
- Lifetime Unlock$4.99









