A fictional digital banking app built with Kotlin and Jetpack Compose. It uses local sample data only; no real accounts or payments are connected.
FintechFlow is a portfolio app demonstrating a polished account overview and simple transfer flow, with UI state separated from the data source.
Live screenshot captured from a Pixel 9 Pro emulator running Android 15 (API 35).
- Home dashboard with available balance, quick actions, and recent transactions.
- Activity list with category filters for income, food, and shopping.
- Transfer form with amount validation and immediate demo balance updates.
- Cards screen with a freeze toggle, editable demo spend limit, theme picker, and safety guidance.
- Spending insights with income, expense, and category summaries.
- Three selectable color palettes: Harbor, Evergreen, and Glacier.
- Material 3 UI with bottom navigation and lifecycle-aware state collection.
- Repository and ViewModel boundaries that can later be backed by a real service.
Every name, card number, and amount is fictional and held in memory. Transfers reset when the app process restarts.
- Install Android Studio and an Android SDK for API 35.
- Open the repository in Android Studio and let Gradle sync.
- Run the
appconfiguration on an emulator or device (JDK 17).
From a terminal, use ./gradlew :app:installDebug with a connected emulator/device. Run the unit tests with ./gradlew testDebugUnitTest.
app/src/main/kotlin/com/premsingh/fintechflow/
data/ DemoFinanceRepository (in-memory implementation)
domain/ Models, amount parsing/formatting, repository contract
ui/ Compose screens and FinanceViewModel
The demo repository is the only data source. FinanceViewModel exposes immutable state to the Compose UI, and money input is parsed into minor units to avoid floating-point rounding.
- Kotlin 2.0.21, Jetpack Compose, Material 3
- Android Gradle Plugin 8.7.3, Gradle 8.9, JDK 17
- minSdk 24, targetSdk 35
- GitHub Actions runs unit tests and assembles the debug app on pushes and pull requests.
FintechFlow is a UI and architecture learning project, not a bank or production payment app. Do not enter real personal, account, or payment information. No backend, authentication, or payment processor is included.
MIT. See LICENSE.