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Hi there, I'm Marcel 👋

I'm a software engineer at SumUp. I previously worked at Vectornator, Ulysses and Zenjob. I am passionate about iOS development and server-side Swift.


  1. This is the application I created for the WWDC 2015 scholarship.


  2. This is the application I created for the WWDC 2016 scholarship.


  3. A modern Objective-C wrapper for the Dribbble API.

    Objective-C 32 1

  4. MVFollow Archived

    MVFollow is a simple drop-in solution that allows you to follow people on Twitter natively.

    Swift 10 3

  5. PhoneBattery – your phone's battery, on your wrist.

    Swift 1

730 contributions in the last year

Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Mon Wed Fri

Contribution activity

October 2020

6 contributions in private repositories Oct 15 – Oct 22

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