qw vs CertLok
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.
CertLok
This free digital credential wallet allows skilled workers to store, manage, and share their certifications and work history. It automatically notifies users of expiring credentials and helps build a comprehensive work log. Employers can easily verify qualifications.
- Store and manage credentials
- Share certifications with employers
- Verify credentials
- Store job documents
- Automatic expiry notifications
- Build and share work history
- Log book functionality
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Certlok™ Overview Certlok™ is a free digital credential wallet and Work History app for skilled workers, including crane operators, linemen, riggers, groundmen, welders, plumbers, pipefitters, shipbuilders, heavy equipment operators, and more. • Store and manage credentials and certificates • Share credentials with employers or unions from your phone • We verify credentials like your CCO card and CDL • Store important job documents like safety plans • Automatic notification of expiry dates • Build and share Work History from credentials and accomplishments • Keep a log book in the app Terms of use: https://riskdataanalytics.com/terms-of-service/
Screenshots
Verdict
The clearest difference is update cadence: CertLok at every 3 weeks 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, CertLok every 3 weeks. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | qw | CertLok |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 20 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 124 MB |
| Age rating | 4+ | 17+ |
| Developer | Rainer Hagemann | Risk Data Analytics, Inc. |
In-app purchases
qw
No in-app purchases
CertLok
No in-app purchases
