PixelCount - Expense tracking and splitting

PixelCount is a Kotlin Multiplatform application designed to help you track and split expenses between groups of friends or colleagues. Whether you're on a ski vacation, sharing a dinner, or collaborating on a project, PixelCount makes it easy to manage who owes what and settle accounts fairly.

✨ Features

• 💰 Easy Expense Tracking - Add expenses and track who paid for what
• 👥 Group Management - Create groups with friends or colleagues
• 🧮 Automatic Settlement - Calculate who owes whom and how much
• 📱 Cross-Platform - Use the same app on your phone, desktop, or smartwatch
• ⌚ WearOS Support - Access your expenses on your smartwatch
• 💾 Local Storage - Your data is stored locally on your device
• 🔄 Real-time Sync - Seamless synchronization between devices via Google Play Services
• 📊 Expense History - View detailed transaction history

📷 Screenshots

🚀 Platforms

PixelCount is built using Kotlin Multiplatform and Compose Multiplatform, currently supporting:

• 📱 Android (Phone & Tablet)
• ⌚ WearOS (Smartwatch)
• 🖥️ Desktop (Windows, Linux)

🛠 Technology Stack

Core Technologies

• Language: Kotlin 2.3.0
• Multiplatform: Kotlin Multiplatform (KMP)
• UI Framework: Compose Multiplatform 1.10.0

UI Components

• Compose Material 3: 1.10.0-alpha05
• Material Icons: 1.7.3
• Navigation: Compose Navigation3 1.0.0-alpha06
• Adaptive Layout: Adaptive Navigation 1.3.0-alpha02
• WearOS Compose: 1.5.6

Data & Persistence

• SQLDelight: 2.2.1 (Multiplatform SQL database)
• Serialization: kotlinx-serialization 1.9.0

Async & Concurrency

• Coroutines: kotlinx-coroutines 1.10.2
• DateTime: kotlinx-datetime 0.7.1

Android Specific

• Android Gradle Plugin: 9.0.0
• Min SDK: 30
• Target SDK: 36
• Activity Compose: 1.12.2
• Material Design: 1.13.0

Device Integration

• Google Play Services Wearable: 19.0.0 (For Android/WearOS sync)

Build Tools

• Gradle: Kotlin DSL

🏗️ Project Structure

PixelCount/
├── androidApp/          # Android phone application
├── wearosApp/          # WearOS smartwatch application
├── kmp/                # Kotlin Multiplatform shared code + Desktop
├── shared/             # Shared business logic and data models
├── gradle/             # Gradle configuration
└── README.md           # This file

Getting Started

Prerequisites

• Java JDK 11 or higher
• Kotlin 2.3.0
• Gradle 8.0 or higher (or use the included Gradle wrapper)
• Android SDK (for Android builds)

Building the Project

Android

./gradlew androidApp:build

Desktop

./gradlew kmp:build

WearOS

./gradlew wearosApp:build

Run Desktop App

./gradlew kmp:run

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Made with ❤️ using Kotlin Multiplatform