Open Source Notices

Sourdough Calculator uses native Apple or Android platform frameworks and the following third-party software through the Northjade foundation. The versions below identify the current platform builds; the linked source repositories provide each open-source project's license and component notices.

RevenueCat Purchases

• Purpose: optional Pro purchase and entitlement handling
• iOS version: 5.83.1
• Android version: 10.14.1
• License: MIT
• Source: https://github.com/RevenueCat/purchases-ios
• Android source: https://github.com/RevenueCat/purchases-android

Firebase

• Purpose: production-approved crash diagnostics, coarse analytics, and remote feature configuration
• iOS version: 12.17.0
• Android: Firebase BoM 34.16.0, including Authentication, App Check, Analytics, Crashlytics and Remote Config
• License: Apache License 2.0 and component-specific notices
• Source: https://github.com/firebase/firebase-ios-sdk
• Android source: https://github.com/firebase/firebase-android-sdk

Google Mobile Ads and User Messaging Platform

• Purpose: production-approved advertising and consent choices
• iOS versions: Google Mobile Ads 13.7.0; User Messaging Platform 3.1.0
• Android versions: Google Mobile Ads 25.4.0; User Messaging Platform 4.0.0
• Terms: Google SDK and distribution terms
• Sources: https://developers.google.com/admob and https://developers.google.com/admob/ump

Android libraries

• AndroidX, including Compose, Room 2.8.4 and ExifInterface 1.4.1: Apache License 2.0; https://android.googlesource.com/platform/frameworks/support/
• Kotlin and kotlinx.coroutines: Apache License 2.0; https://github.com/JetBrains/kotlin and https://github.com/Kotlin/kotlinx.coroutines
• Gson 2.12.0: Apache License 2.0; https://github.com/google/gson
• Google Play Billing 8.3.0 and In-App Review 2.0.2: Google SDK terms; https://developer.android.com/google/play/billing and https://developer.android.com/guide/playcore/in-app-review

Platform frameworks

SwiftUI, SwiftData, CloudKit, PhotosUI, UserNotifications, ImageIO, and Uniform Type Identifiers are Apple system frameworks. Formula, schedule, persistence, starter, and journal logic is product-owned.

The Android app uses Android system notifications, alarms, the system photo picker and Android backup. These are platform services rather than separate cloud storage provided by Northjade.