Currency Converter App

A modern currency converter and transaction tracker built with Jetpack Compose, MVVM, Hilt, and Kotlin Coroutines. This app allows you to monitor exchange rates, manage accounts, and track your currency transactions in an intuitive and elegant interface.

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📱 Features

• Real-time currency rates
• Secure transactions between accounts
• Clear overview of balances
• Local database storage
• Smooth animations with shimmer loading indicators
• Fully responsive UI built with Jetpack Compose

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🚀 Technologies

• Jetpack Compose for declarative UI
• Hilt for dependency injection
• Room for local data persistence
• Kotlin Coroutines + StateFlow for reactive state management
• Navigation Compose for screen transitions

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🗺️ Screens

• Currency Screen: shows current exchange rates, allows selecting a target currency, and supports quick recalculations.
• Accounts Screen: displays balances of all available currencies and lets you monitor your funds.
• Exchange Screen: provides a flow to exchange amounts between accounts with validation and confirmation steps.
• Transactions Screen: lists all past currency exchanges, showing date, amount, and direction of each transaction.

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📸 Screenshots

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⚙️ Setup

git clone https://github.com/simadimonyan/currency-converter-app.git

Open the project in Android Studio, sync Gradle, and build the project. Then run the app on your emulator or connected device.

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📂 Project Structure

currencyconverter
├── data
│   └── dataSource
│       ├── remote
│       │   ├── dto
│       │   │   └── RateDto.kt
│       │   ├── RatesService.kt
│       │   └── RemoteRatesServiceImpl.kt
│       └── room
│           ├── account
│           │   ├── dao
│           │   │   └── AccountDao.kt
│           │   └── dbo
│           │       └── AccountDbo.kt
│           ├── converter
│           │   └── Converters.kt
│           ├── transaction
│           │   ├── dao
│           │   │   └── TransactionDao.kt
│           │   └── dbo
│           │       └── TransactionDbo.kt
│           └── ConverterDatabase.kt
├── di
│   └── DatabaseProvider.kt
├── domain
│   ├── entity
│   │   ├── Balance.kt
│   │   └── Currency.kt
│   ├── repository
│   │   ├── AccountRepository.kt
│   │   ├── RateRepository.kt
│   │   └── TransactionRepository.kt
│   └── usecase
│       ├── CountByRatesUseCase.kt
│       ├── ExchangePairUseCase.kt
│       ├── GetAllTransactionsUseCase.kt
│       ├── GetOneRateCostUseCase.kt
│       └── UpdateAllBalancesUseCase.kt
├── ui
│   ├── navigation
│   │   ├── NavGraph.kt
│   │   └── Routes.kt
│   ├── screens
│   │   ├── currency
│   │   │   ├── CurrencyEvents.kt
│   │   │   ├── CurrencyScreen.kt
│   │   │   └── CurrencyViewModel.kt
│   │   ├── exchange
│   │   │   ├── ExchangeEvents.kt
│   │   │   ├── ExchangeScreen.kt
│   │   │   └── ExchangeViewModel.kt
│   │   ├── transactions
│   │   │   ├── TransactionsEvents.kt
│   │   │   ├── TransactionsScreen.kt
│   │   │   └── TransactionsViewModel.kt
│   │   └── ActivityScreen.kt
│   ├── shared
│   │   ├── components
│   │   │   ├── cards
│   │   │   │   ├── CurrencyCard.kt
│   │   │   │   ├── ExchangeCard.kt
│   │   │   │   └── TransactionCard.kt
│   │   │   ├── BottomNavigation.kt
│   │   │   └── Shimmer.kt
│   │   └── state
│   │       ├── ExchangeStateHolder.kt
│   │       ├── RateStateHolder.kt
│   │       └── TransactionsStateHolder.kt
│   ├── theme
│   │   ├── Color.kt
│   │   ├── Theme.kt
│   │   └── Type.kt
│   └── MainActivity.kt
└── App.kt

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📄 License

This project is licensed under the MIT License. See the LICENSE file for details.