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Build — Apps

Native Android App Development (Kotlin, Java)

Native Android in Kotlin with Jetpack Compose, plus rescue and upgrades for legacy Java apps that still pay the bills.

Native Android App Development (Kotlin, Java) by CrownCode

The problem

Android runs on thousands of devices. Your old Java app crashes on half of them, and nobody on the team wants to touch it.

What we do

We build modern Android apps in Kotlin and Compose, and we take over legacy Java codebases without a full rewrite.

  • Device-aware testing across screen sizes and OS versions
  • Step-by-step Kotlin migration while the app keeps shipping
  • Play Store vitals cleaned up: crashes, ANRs, battery

Who it’s for

  • Products with Android-first audiences, especially in India and emerging markets
  • Apps that need deep hardware or OS integration
  • Teams modernising an old Java codebase to Kotlin and Compose

Why CrownCode

We build with modern Kotlin and Jetpack Compose, test on real mid-range devices, not just flagships, and handle Play Store review for you.

How we deliver

From first call to launch.

  1. 01

    Discover

    A free call to understand goals, users and constraints.

  2. 02

    Demo & scope

    A working demo in 48 hours, then a written scope and fixed price.

  3. 03

    Build

    Weekly releases you can click through. No black boxes.

  4. 04

    Launch & grow

    Go live, monitor, iterate — or a clean handover.

Proof

Related work

Placeholder App

Germany · 2026

Example Project: Android Field Inspection App

Placeholder case study: an offline-first Android inspection app for a German EHS team. Replace with a real project.

KotlinJetpack ComposeRoom

FAQ

Native Android App Development: questions

How does a project with you work?

Placeholder answer (partners to confirm). Discovery call, written scope and estimate, then short sprints with a demo at the end of each. You see working software early and often.

Who owns the code and designs?

Placeholder answer (partners to confirm). You do. Once invoices are paid, the code, designs and accounts are transferred to you.

Keep exploring

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Book a free 20-min call. We'll understand what you need and send a basic demo within 48 hours.