tyiuandClaude Sonnet 5
8057651688
Strings.kt is now generated at build time (:webHtmlApp:generateStrings, in webHtmlApp/build.gradle.kts) by parsing shared's strings.xml directly, rather than a hand-maintained duplicate that could silently drift from it. Names are mechanical camelCase of the XML key, so a few call sites got more verbose (e.g. moveUp -> moveCurrencyUpContentDescription) in exchange for zero manual sync. Only covers the base English locale. Also collapses currency_option_label_local into currency_option_label: the two had identical English text and existed only as a hook for a future translation to phrase the user's own currency differently, which no locale currently does. Removes the info.code == localeCurrencyCode branching (and the now-pointless localeCurrencyCode parameter/field) from all three UI implementations - PriceScreen.kt, CurrencyPickerSheet.swift, and HtmlCurrencyPicker.kt - plus IosConverterState.localeCurrencyCode, which existed solely to feed that branch on the Swift side. Fixes a real regression surfaced while verifying the above by actually building the Xcode project (not done since currencyFlagEmoji() gained its supportsFlagEmoji parameter): Kotlin/Native doesn't generate default-parameter overloads for Swift/ObjC-exported functions, so both Swift call sites needed the argument passed explicitly, via the correct exported facade name for an expect/actual pair - the actual file's (SystemCurrencies_appleKt), not the common one (SystemCurrenciesKt). Also drops "(DOM)" from webHtmlApp's page title. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
SatsPrice
This app fetches the price of Bitcoin relative to common fiat currencies from multiple sources, and converts inputted amounts between Sats, BTC, and the selected fiat currency.
Download and Install
Supported Platforms
iOS 16.0+ • macOS 13.0+ • Android 7.0+ • Web (any modern browser)
Screenshots
Android
iPhone
iPad
macOS
Kotlin Multiplatform
This is a Kotlin Multiplatform project targeting Android, iOS, macOS, Web, and Desktop (JVM).
-
/shared contains almost the entire app — UI (built with Compose Multiplatform), view models, data sources, and domain logic. commonMain holds code shared by every target, alongside platform-specific source sets:
androidMain,jvmMain(Desktop),appleMain(iOS and macOS), andwebMain(JS and Wasm). -
/androidApp, /desktopApp, and /webApp are thin launcher shells around
shared's Compose UI. -
/iosApp is a native SwiftUI app (shared across iOS and macOS), not Compose — it talks to
sharedthrough a hand-written bridge rather than rendering Compose directly.
Running the apps
Use the run configurations provided by the run widget in your IDE's toolbar. You can also use these commands and options:
- Android app:
./gradlew :androidApp:assembleDebug - Desktop app:
- Hot reload:
./gradlew :desktopApp:hotRun --auto - Standard run:
./gradlew :desktopApp:run
- Hot reload:
- Web app (Compose Multiplatform UI, Skia-rendered - what's deployed to production):
- Wasm target (faster, modern browsers):
./gradlew :webApp:wasmJsBrowserDevelopmentRun - JS target (slower, supports older browsers):
./gradlew :webApp:jsBrowserDevelopmentRun
- Wasm target (faster, modern browsers):
- Web app, DOM alternative (Compose HTML UI, renders real DOM instead of Skia/canvas - not what's
deployed to production):
./gradlew :webHtmlApp:jsBrowserDevelopmentRun - iOS app: open the /iosApp directory in Xcode and run it from there.
- Website with the web app built and served at
/app/(thewebHtmlAppDOM build, not the one production actually deploys):./website/serve-local.sh(serves at http://localhost:8000 by default; pass a port number to override)
Running tests
Use the run button in your IDE's editor gutter, or run tests using Gradle tasks:
- Android tests:
./gradlew :shared:testAndroidHostTest - Desktop tests:
./gradlew :shared:jvmTest - Web tests:
- Wasm target:
./gradlew :shared:wasmJsTest - JS target:
./gradlew :shared:jsTest
- Wasm target:
- iOS tests:
./gradlew :shared:iosSimulatorArm64Test
Attribution
This project uses Kotlin Multiplatform, Compose Multiplatform, and Kotlin/Wasm, along with the following libraries:
- Ktor for networking
- SQLDelight for local persistence
- moko-resources for multiplatform string/resource handling
- kotlinx.coroutines, kotlinx.serialization, and kotlinx.datetime
- kotlin-wrappers for browser/JS interop on the Web target
- kotlin-multiplatform-bignum for arbitrary-precision arithmetic
The Bitcoin Calculator icon was created by Icon home and licensed as free for personal and commercial use with attribution.
The following free APIs are used:
- Coinbase
- CoinGecko