Mobile App's



Sail Learn

iOS & Android App


This App is only in German (for Germany, Austria & Switzerland). This App is about sailing, sailing theory and the rules on the water. It also has some quiz where you can test your knowledge! This App is developed with Dart & Flutter!


Go to the App Site

Rabby Do

iOS App


This is my current iPhone app! It's a ToDo app where you can create lists of related tasks! This app uses iCloud, so you can sync the data between different iOS and macOS devices!


Go to the App Site



Pig Oboli

iOS App


This App is for Money Saver and there you can save your Pocket-Money. This App is also for young children but also adults can have fun with that App.


Go to the App Site

Doggy Chuck

iOS App


Doggy Chuck is about the pet of my Sister and also has now a animated iMessage App.


Go to the App Site



Rabbit Pepper

iOS App


Rabbit Pepper is my pet and also has now a animated iMessage App.


Go to the App Site





Mobile Game App's



Child Shapes

iOS App


This App is for children developed, but also fun for older people! You have to bring diffrent Shapes to the right place. It also has an AR Game, where you play in the Real World.


Go to the App Site

Ice Puck

iOS App


This was my first gaming App. This App is about a Ice Hockey and you have to bring the puck to the goal, but there are enemy players!


Go to the App Site





macOS App's



Rabby Do

macOS App


This is my current Mac app! It's a ToDo app where you can create lists of related tasks! This app uses iCloud, so you can sync the data between different iOS and macOS devices!


Go to the App Site

Home Capital

macOS App


My App „HomeCapital“ is now available! This macOS App is a house holding App, where you can keep track of your Income and Outcome. "I wanted a very simple budget book app, without any frills!" - David Koenig


Go to the App Site





Web Pages



U.R.D. Universe

Web Page


This website I am making with friends all over Germany. It is still in the making process. The main release is taking still some time, but give it a look from time to time!


Go to the Web Page