Software to install.

For macOS, Windows, iPhone and iPad – with signing, notarization and publication in the App Store. On request also as a browser version that runs without installation.

Discuss your project View example

2Operating systems plus browser
Signedand notarized
License serverincluded

Interface of the Offenlegungs-XML Editor: document structure, notice header, properties and the status “Einreichungsfähig” (ready to file) — Offenlegungs-XML Editor for macOS and Windows

What I build

Programs that run on your customers’ computers – and apps for the smartphone.

Desktop programs
One application for both systems.
- macOS and Windows
- Import from Word and Excel
- Validation against specifications and schemas
- Light and dark mode
Signing & distribution
So your software starts without a warning.
- Code signing for macOS and Windows
- Notarization by Apple
- Trial version to download
- New versions with a changelog
Browser version
For computers where nobody is allowed to install anything.
- The same features in the browser
- Data stays on the device
- Same license
- Info sheet for IT
Apps
For iPhone, iPad and Android.
- Apps for iOS and Android
- Publication in the App Store and on Google Play
- Privacy and store information
- Games: realmaker games

Your data stays with you: The Offenlegungs-XML Editor (a tool for creating XML disclosure files of annual financial statements for the Bundesanzeiger, the German Federal Gazette) works locally – document contents never leave the computer.

One editor for two systems and the browser

Offenlegungs-XML Editor – own product

Annual financial statements are built visually from headings, paragraphs, lists and tables; the XML file is created in the background. The software checks every document against the official schema and shows at any time whether it can be filed.

View product Read the full case study

Homepage of offenlegungs-xml-editor.de: “Offenlegungs-XML Editor – XML-Datei für Bundesanzeiger und Unternehmensregister erstellen – ohne XML-Kenntnisse” (create XML files for the Bundesanzeiger and the company register without any XML knowledge)

Visual editor
Content by click, the XML file is created automatically.
From Word and Excel
Formatting and tables come along when you paste.
Schema validation
Errors with line numbers, before the file is filed.
Two targets
Export for either the Bundesanzeiger (Federal Gazette) or the Unternehmensregister (German company register).

macOS 11+ and Windows 10/11 · browser version with the same license · current version 3.2

How your product takes shape

For clearly defined projects, I work at a fixed price. More about the process.

Concept
Clarify the goal, audience, business model and scope. The result is a fixed framework.
Prototype
Something clickable early on, so you can see whether the idea holds up.
Development
In visible milestones instead of a black box.
Launch & sales
Release, shop, licenses or App Store.
Operation
Hosting, maintenance and further development. I remain your point of contact.

Frequently asked questions

Which systems do you develop for?

For macOS and Windows, and on request also as a browser version. I develop apps for iPhone, iPad and Android.

Why sign and notarize?

So your software starts without a security warning. I handle the code signing for macOS and Windows and the notarization with Apple.

How does the software reach customers?

As a download with a trial version, through a shop with licenses or – for apps – through the App Store and Google Play.

Is there support after launch?

Yes. I continue to look after your software – with maintenance, updates and further development, as a block of hours or a monthly flat fee.

Got a product idea?

Tell me about it. In a free initial call – 30 minutes by video or phone – we clarify the goal, the scope and the most sensible way forward. Then you receive a non-binding quote.