# Jetpack Compose migration for Nimbus Audio

> Migrated a large Android app from XML views to Jetpack Compose screen by screen.

URL: https://freelance.adscaled.media/freelancers/ryan-mitchell/work/jetpack-compose-migration-for-nimbus-audio

Migrated a large Android app from XML views to Jetpack Compose screen by screen. A case study by Ryan Mitchell, Senior Android Engineer (Kotlin).

## Challenge

The Android app of Nimbus Audio, a headphone brand, had 120 screens in XML with a lot of duplicated layout code. New features took twice as long as on iOS, and cold start was slow.

## Solution

I introduced a Compose design system, migrated screens incrementally starting with the most-changed ones, and profiled startup to remove blocking work from the main thread.

[View Ryan Mitchell’s profile](https://freelance.adscaled.media/freelancers/ryan-mitchell)

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