Designed and built a social network to bring friends closer together using micro-events. Featuring native frontends on android and iOS and a custom backend hosted in the cloud.

AppStore Play Store Website

 Results:

Signed up 500 users in the first 3 months before pausing the project due to COVID-19. Over 300 "Leuchtsignal"s created to date.

 Technologies:

Native iOS App (Swift) Native Android App (Kotlin) Ktor-based Backend (Kotlin) PostgreSQL Docker Firebase Cloud Functions AWS S3 OpenStreetMap Nginx Bitbucket Pipelines Firebase Analytics Photon Geocoder AWS DynamoDB

 Screenshots:

A website for my father's architecture studio. The site I designed and built represents two companies and is generated based on a JSON file for easy content management.

Website

 Technologies:

Angular Firebase Hosting

 Screenshots:

A simple android app for tracking working time by the hour for multiple jobs. Supports tracking of specific tasks to generate PDF invoices or Excel exports and sports a simple set of location-based rules for automated tracking. Originally released in 2015 under a different name.

Play Store Website

 Results:

Over 2000 organic downloads with a 4.5 star rating in Google Play.

 Technologies:

Native Android App (Java) Firebase Analytics & Crashlytics Couchbase NoSQL

 Screenshots:

Customizable substitution plan browser and school planner I built for my highschool. Comes in the form of an android app that's backed by a custom PHP web crawler with a MySQL database that sends substitution plan updates via Google Cloud Messaging.

Play Store

 Technologies:

Native Android App (Java) PHP MySQL Google Cloud Messaging

 Screenshots: