# Sportiv Tech Stack > Here are what we are using for our native tech stack. ## iOS App Requirement • Swift5 Language • XML Interface Builder • MVVM Architectures • Domainless • SOLID Principles • Clean Architecture ## Android App Requirement • Android XML (Constraint layout) • Kotlin Language • Adapter, RecyclerView • MVVM Architecture • Retrofit + Kotlin Coroutines • Manual Dependency InjectionNot Mandatory: • SOLID Principles • Clean Architecture • Dagger2 ## Backend Requirement • TypeScript • NestJs / ExpressJS • TypeORM (Object–relational mapping)
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