Christian Krueger

About

I'm Chris Krueger, a Berlin-based solo developer with over 14 years of software experience. I started my career in Java enterprise development before transitioning into mobile — growing from Android Engineer to Android Architect at KAYAK. Today I independently build and ship a growing portfolio of mobile apps using Kotlin Multiplatform — including Moviebase, ReSubs, and Momental. My focus is on scaling each app sustainably while continuously expanding the portfolio, applying everything I've learned from large-scale engineering to the challenges of indie development. Passionate about developing polished, user-centric products, I regularly share my learnings around app monetization, RevenueCat, Kotlin Multiplatform, and indie growth — on Twitter and in the wider developer community.

Expertise

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What they build with RevenueCat

Moviebase

Discover, find and track your movies and TV shows from TMDB. Track your watched episodes with Trakt and organize your watchlist.

ReSubs

Take control of your recurring expenses. Track, manage, and optimize all your subscriptions in one place with smart insights.

Momental

Free sleep sounds app with calming ambient sounds, white noise & nature sounds. Fall asleep faster for iOS & Android.