Comparison

qw vs CertiDox

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

qw

Features
Read full description

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.

About

CertiDox

Features
Read full description

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

qw2 screens
CertiDox4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard1 real difference · 5 level
qw versus CertiDox: the parameters behind the verdict, then further details
ParameterqwCertiDox
PriceFreeFree
Update frequencyEvery 20 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size1 MB43 MB
Age rating4+4+
DeveloperRainer HagemannTOKEN ECONOMICS

In-app purchases

None

qw

No in-app purchases

None

CertiDox

No in-app purchases

Questions

Is qw free?
qw is free to download, with no in-app purchases.
Is CertiDox free?
CertiDox is free to download, with no in-app purchases.
Do qw or CertiDox have ads?
Neither qw nor CertiDox shows ads.
Which is updated more often, qw or CertiDox?
qw ships an update every 20 months, and CertiDox every 5 months. Most recently, qw was updated on October 2, 2026 and CertiDox on October 10, 2026.

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