qw vs Certidox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
qw
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This App is a demonstrator for QR-Codes on EuroWeld certificates. You can read QR-Codes that are created by the program EuroWeld. CertChecker analyses the QR-Code and shows the parts in a readable form. Additional it checks the signature and says if it is valid or invalid. With the Certipedia-Button you can call the official Certipedia-Website to check your EuroWeld certificate.
Certidox
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Certidox: Verify Before You Rely on It. A document can look authentic even when its content has been altered. An email can impersonate a trusted sender. A QR code can conceal a fraudulent link. Certidox lets you verify certified documents and emails, and inspect QR codes before trusting them. VERIFY CERTIFIED DOCUMENTS Scan the Certidox QR code on any certified document, whether digital or printed, original or copy. Instantly and independently: • Identify the issuer of the document. • Check its certification date. • View the certified content and compare it with the document you received. • Check its current status: active, suspended, or revoked. VERIFY CERTIFIED EMAILS Review the certified information associated with an email, including its sender and message details, to identify discrepancies or potential impersonation attempts. SHARE DIRECTLY FROM SAFARI Found a QR code while browsing in Safari? Use the iOS Share feature to send it directly to Certidox and inspect it on your iPhone or iPad. No need for a second device to scan a QR code displayed on your screen. GET REAL-TIME STATUS ALERTS What happens if a document you previously verified is suspended, revoked, or superseded? Certidox alerts you when its status changes. Issuers retain control over the status of their certified documents, even after distribution. INSPECT NON-CERTIDOX QR CODES Not every QR code is proof of authenticity. Certidox can also analyze QR codes generated by third parties. The app displays the destination URL, allowing you to inspect it before deciding whether to open the link. CONFIDENTIAL BY DESIGN Certidox does not process or store readable document content on its servers. Your information remains confidential. Verify Before You Rely on It. Download Certidox for free on your iPhone or iPad.
Screenshots
Verdict
The clearest difference is update cadence: Certidox at every 6 months against qw's every 20 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
qw ships an update every 20 months, Certidox every 6 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.
| Parameter | qw | Certidox |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 20 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Rainer Hagemann | Token Economics |
In-app purchases
qw
No in-app purchases
Certidox
No in-app purchases









