Christians Portfolio
My Own Projects
iVocabularysince 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
- 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