My name is Gerrit kleyn Winkel.
I am a registered Mobile App developer from the Netherlands.
I'm working as a Professional Freelance Software Engineer for over 20 years now and started developing apps in 2010.
You can have a look at my App portfolio by selecting one of the Mobile systems mentioned on the top of this page.
You can contact me via the "Contact" page, to mail me about App improvements, suggestions or any other business that you would like to share with me.
Most of my Apps are published in the Google Play store, Apple app store, Windows Phone Store or BlackBerry World