trading forex risk management fintech Kotlin Swift in-app purchases mobile app
STINU — Position Size Calculator
Android & iOS
About
Professional-grade position sizing tool for forex, indices, commodities, and crypto with live market data and pip-level precision.
My Role
Full-stack delivery of calculator logic, contract presets, interactive tutorials, bilingual support, and monetization funnels.
Core Capabilities
- Pip-accurate risk and position size calculations across multiple asset classes
- Contract presets for metals, forex, indices, and crypto
- Lot size vs. account risk comparison in real time
- Favorites and stored configurations
- Interactive tutorials and localized UI
Architecture
- Android: Jetpack Navigation; MPAndroidChart; Firebase Remote Config; LiveData/Flows
- iOS: Swift + SwiftUI; Combine for calculations; StoreKit 2; localized asset pipeline
Tech Stack
Kotlin Jetpack Navigation MPAndroidChart Firebase Remote Config Firebase Messaging BillingClient Swift SwiftUI Combine StoreKit 2