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: The simple and effective app to verify the authenticity of certified documents and safely analyze any QR code! With Certidox, a quick scan of the QR code attached to a document is enough to find out: • Where the document comes from, • Whether it is active, suspended or revoked, • And whether it matches the original. You are automatically notified if the status of the document changes. Scan. Check. That’s it. CertiDox can also analyze QR codes from other sources, so you can see exactly which URL they point to — without any risk. Key Features: • Verification of the origin, status, and authenticity of printed or electronic documents certified by CertiDox, • Analysis of QR codes not generated by Certidox, • Real-time alerts if the status of a certified document changes. Download CertiDox for free on your smartphone or tablet. Clarity, reliability, simplicity.
Screenshots
Verdict
The clearest difference is update cadence: CertiDox at every 5 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 5 months. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.
| Parameter | qw | CertiDox |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 20 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Rainer Hagemann | TOKEN ECONOMICS |
In-app purchases
qw
No in-app purchases
CertiDox
No in-app purchases









