qw vs Program Codes
Price, ratings, monetisation and update history for both apps, side by side โ 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.
Program Codes
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Program Codes is a program code download application (source codes). There are over 20 Windows applications in total. The codes are packed in a RAR file. After downloading, you need to unpack them and open the project in an IDE application. Project types are: C#, C++, Java. The codes only work in a Windows environment. The codes only need an IDE to compile and run programs after compilation. C# and C++ codes need Windows Visual Studio to compile. And Java codes Eclipse. The app is easy to use. To do this, press the Programs button in the main menu and you will see programs that you can download (Projects). Once you have selected an application, press the Open button. You can browse the application files and view them in the application tree. If you want to see the contents of the file, press the Content button, the file must be selected. You can see the contents of the files, not folders. If you want to download a Project, press the Download button. You can download the application if you have upgraded. This is a paid purchase. You can do this by pressing the Upgrade button in the Main menu. You can choose the location of the downloaded file on your device.
Screenshots
Verdict
The clearest difference is in-app purchases: qw at none against Program Codes's 1. Program Codes's advantage is update cadence (every 9 months vs every 20 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Program Codes sells 1 one-off in-app purchase. qw asks for nothing beyond the download.
qw ships an update every 20 months, Program Codes every 9 months. The most recent releases landed on September 15, 2026 and September 12, 2026 respectively.
| Parameter | qw | Program Codes |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 20 months | Every 9 months โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 โ better | 15.6 |
| Further details โ not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Rainer Hagemann | Janek Soomets |
In-app purchases
qw
No in-app purchases
Program Codes
- Upgrade Program Codes$12.99









