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Welcome to my site! I am a Apple Developer and Front End Developer. All my knowledge I learned by myself. I did not study at a University, but I am also as good. Take a tour through my site.
I am not availble for a new project at this moment!

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Welcome to my Site!

My name is David and I am a Mobile & Web Developer. I am also a passionate amateur sailor, but this page is not about sailing. I write about developing App’s & Webpages. I write about stories that interest me. I am also publishing „News“ (you will find in my news)! Every now and then, stop by again. Apps that I have brought to the AppStore are well represented here. Please feel free to contact me, Thanks!

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David Koenig


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75%                                        Swift
65%                            HTML & CSS
45%               Javascript
45%               Typescript
35%            Python
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David Koenig


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iOS Sail Learn Update v. 1.6

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!


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macOS HomeCapital

My macOS App was downloaded over 200 times in one Month. In this App you can track your income and outgoings of your money! For the Outgoings you have a wonderful Pie Chart. Try It!


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