Christians Portfolio

My Own Projects

iVocabulary since October 2008

An electronic vocabulary collection and trainer for iPhone, iPad and Mac. iVocabulary was my first app for the iPhone, based on a well known OS X app named ProVoc. I used ProVoc to learn a language and wanted to learn them in the train on my new iPhone.

  • Cocoa (Touch)
  • Core Data
  • Core Animation
  • Storyboard
  • Store Kit
  • Ensembles.io
  • Cocoapods
    • Test1
  • Cappuccino

Jack since January 2014

A frontend to iTunes Connect that is convenient and fast. Manage localizations, screenshots, pricing intervals and in app purchases without all the reloading breaks.

  • Cocoa
  • Core Data
  • FastSpring
  • Cocoapods

The Social Addressbook since April 2011

A frontend to all the social networks like Facebook, Xing, LinkedIn, Twitter, etc. that looks like the classic address book app on Lion.

  • Cocoa
  • Core Data
  • OAuth(2)

Client Projects

Rheinische Post @ clapp.de March 2014 – Today

Based on clapps own frameworks, we develop a newspaper app for a well known, local german newspaper.

  • Cocoa Touch
  • Core Animation
  • Storyboard
  • Store Kit

T-Systems MMS October 2013 – February 2014

For a large german company we developed an iPad app for their consultants.

  • Cocoa Touch
  • Core Animation
  • Storyboard

dotdotdot March 2012 – October 2013

As the lead frontend developer iOS I built the iPad and iPhone app for the dotdotdot plattform.

  • Cocoa Touch
  • Core Data
  • Core Text
  • Core Animation
  • Storyboard

Selthin

For a sheikh I built the second version of an iPad frontend for a CMS that presents information about horses and horse races.

  • Cocoa Touch
  • Core Animation

KaufDA

As a sole developer, I created the first version of the KaufDA app for the iPhone and later the iPad.

  • Three20
  • MapKit
  • Cocoa Touch
  • Core Animation

Taxometer September 2009 - October 2011

Developed a taxi calculation app together with some guys who developed the backend and collected all data necessary.

  • Three20
  • Cocoa Touch
  • Core Animation

inubit BPM December 2009 - February 2010

As my first contracting job I created an iPhone frontend to the web portal of the inubit BPM suite.

  • Three20
  • Cocoa Touch
  • Core Animation