How I Built a Real-World Kotlin Multiplatform App

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On September 3rd I launched Vesper, a cross-platform Christian prayer app for Android and iOS, as my entry in the RevenueCat 2026 Shipaton. This is not just a basic app thrown together quickly for this context, though: I have spent months building it and iterating on the features and design, as I am building it as a real production-grade application to bootstrap a business. I'm publishing this series of technical posts as a retrospective look back on how I built it.

A bit of context

I first got the idea for this app and started working on Vesper in early May. The Shipaton happened to coincide with my already-planned release schedule, so I decided to wait a few extra weeks so I could polish things up and document the technical decisions I'd made along the way for the benefit of the Kotlin community. These posts are written after...

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