App Development

Android app development is what got me into computer science. I started learning about this topic while still in the 12th and final year of high school.
Leander Christmann
Leander Christmann
App Development

I got taught the basics of programming in 2020 by following following the extensive Android 8 Developer Course by Denis Panjuta, who happens to have graduated from the same University of Applied Sciences, Constance as me 12 years later.

The course covered fundamental Java and Kotlin features as a foundation to do mobile development on the Android platform. By the end of 2020, I was thereby ready to apply that knowledge and built three native apps myself: OctoQuotes, Flyleaf and DirtyWork.

You can find the full source code of those apps on GitHub and download the APKs from there directly to your Android phone to install them. Beware that you might need to enable the installation of APKs by yourself first. But it’s worth it, because now we’re free of all the tracking that Google forces in there when distributing apps through the Play Store.

OctoQuotes

OctoQuotes App

OctoQuotes is a quotes app that contains more than 2000 citations broken down into 15 different categories such as Attitude, Humor, Love, Motivation, Sports and Coding. It has a rather minimalist design while still providing essential features like:

  • dark (recommended) and light mode
  • randomization
  • favourites collection
  • in-app feedback and quote ideas submission by user

OctoQuotes repository
Download the APK (lowermost 3 dots menu > download)

Flyleaf

Flyleaf is an app for bookworms, who want to carry a list of their books with them on their phone (like an inventory), sorted in different categories.

Additionally, it allows you to maintain a list of books you are about to read and save the ones you are planning to buy.

Flyleaf repository
Download the APK (press the download button there)

DirtyWork

DirtyWork is a to do list app. It comes with a simple, dark design and supports categorizing your todos into today, tomorrow and soon.

Being able to swipe todos smoothly from right to left is a really handy feature built into it.

DirtyWork repository
Download the APK (press the download button there)

Bodensee Consulting
Marketing & Design

Bodensee Consulting

As a trial project to join the Bodensee Consulting student consultancy, I had to design a Whitepaper from scratch according to corporate design guidelines.