VOIR

Compose Multiplatform design system for Android, iOS and JVM: foundation components, charts, cropper, date-time pickers, auth/profile/attachments flows, icons and ViewModel.

Open-source GraphQL and REST API and Dockerized world reference database for countries, cities, currencies, languages, timezones, flags, regions, and central banks.

Typed Kotlin Multiplatform caching for Android, iOS, and JVM, with bounded memory, single-flight loading, optional Room persistence, and kotlinx.serialization.

Kotlin Multiplatform calculator engine with reactive StateFlow state, decimal arithmetic, configurable precision, operation precedence, and formatting helpers.

Offline-first data synchronisation between many clients and one server

Moneta is a compact, immutable value object representing a monetary amount together with its currency metadata.

Tiny Kotlin Multiplatform decimal numbers for money, balances, exchange rates, and other precision-sensitive values, backed by BigDecimal on JVM/Android and NSDecimalNumber on Apple targets.

A tiny Kotlin Multiplatform tri-state Optional type for PATCH DTOs and partial updates, distinguishing absent fields, explicit nulls, and present values with kotlinx.serialization support.

A Kotlin Compose Multiplatform library for managing form states, validations, and data binding in a declarative way.

Currency exchange rates mobile app and API