Case Study · Kotlin Multiplatform

Lazy Pizza — one app for Android and iOS

Food ordering with a pizza builder, checkout and order history — developed from a single codebase that runs on both platforms.

  • Kotlin Multiplatform
  • Compose Multiplatform
  • Android + iOS
  • Firebase
Lazy Pizza — menu on iPhone Lazy Pizza — cart on Android
The project

Two platforms, one budget

If you offer an ordering app, you want to reach all your customers — whether they use an iPhone or an Android device. Traditionally that means two separate apps and double the development and maintenance costs. Lazy Pizza demonstrates the more efficient way.

The app is built with Kotlin Multiplatform and Compose Multiplatform: business logic and user interface exist only once and run natively on both platforms — with identical functionality, identical design and significantly lower costs. Firebase, Google's proven cloud platform, serves as the backend.

  • Menu with categories — browse items and filter by category
  • Pizza builder — add and combine toppings individually
  • Flexible checkout — immediate pickup or a scheduled time slot
  • Recommendations — matching suggestions and a comment option at checkout
  • Order history — previous orders at a glance
  • One codebase — identical app on Android and iOS, half the maintenance
Impressions

Android and iOS side by side

Same codebase, same experience: Android on top, iPhone below.

Technology

What's under the hood

A modern, future-proof technology stack — briefly explained, and what it means for your project.

Kotlin Multiplatform

One codebase for Android and iOS — lower costs, faster updates on both platforms at once.

Compose Multiplatform

A shared, modern user interface with native performance on every device.

Firebase

Google's cloud platform for database and image storage — scales automatically.

Material 3 Adaptive

A design system that automatically adapts to different screen sizes.

Room & DataStore

Local data storage for fast loading times and convenience features.

Ktor

Efficient networking, shared between both platforms.

Koin & clean architecture

Cleanly structured code that stays easy to extend for years.

Navigation 3

Google's latest navigation solution for robust, predictable app flows.

One app for Android and iOS — instead of two budgets?

Kotlin Multiplatform makes it possible. Let's discuss — free of charge — whether this approach is the right one for your project.

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