Kotlin Weekly #-501!

A new era for choice and openness (android-developers.googleblog.com) Google has announced a major evolution of its business model, introducing expanded billing choice, a new ‘Registered App Stores’ program for easier sideloading, and a restructured, lower service fee system.

KotlinConf 2026 Full Schedule (kotlinconf.com) JetBrains has published the full schedule for the KotlinConf 2026. Check it out!

[SPONSORED] Start With Nav3: practical Navigation3 foundations (free webinar + recording) (webinar.kt.academy) Nav3 is here - but how do you model navigation cleanly and keep ownership of the backstack? In this free webinar (19 Mar, 13:00 UTC+1) Marcin Moskała & Jov Mit explain Nav3 setup, core building blocks, BackStack, EntryProvider/entries, and screen transitions. Live Q&A + recording.

[SPONSORED] In the AI era, value at work shifts further from output to understanding (www.advancedcompose.com) AI accelerates implementation, but it doesn’t own correctness or long-term cost. That responsibility still defines career value. Advanced Compose is built to close common gaps-recomposition, modifiers, layout, semantics-so you can reason about code behavior and confidently evaluate AI output. Details are available on the course page.

Is AndroidX ViewModel the best choice for KMP projects? (touchlab.co) Gustavo Fão Valvassori weighs the benefits of using AndroidX ViewModels in KMP against the ‘Androidified’ friction they can cause for native iOS teams.

KMP Architecture: The Case for Pure Kotlin ViewModels (medium.com) Fredrick Chibuzor Osuala argues for ‘Pure Kotlin ViewModels’ in KMP, using composition and platform-specific wrappers to maintain a strict separation of concerns

From Confusion to Mastery - My Journey with Kotlin Coroutines and Building ‘KoCache’ (callistaenterprise.se) Anders Asplund shares insights from Marcin Moskala’s Coroutines Mastery course and the development of KoCache, a suspend-native, LRU caching library built with structured concurrency.

Jetpack Compose and the Speed of Thinking (annycedavis.com) Annyce Davis reflects on her journey from Jetpack Compose skeptic to advocate, highlighting how declarative UI reduces cognitive drag and accelerates the development loop.

Android Bench (developer.android.com) Google’s new Android Bench leaderboard ranks top LLMs on high-quality Android development tasks, with Gemini 3.1 Pro currently leading the field.

GitHub Store (github.com) GitHub Store is a free open-source app store for GitHub releases - browse, discover, and install apps with one click, using Kotlin and Compose Multiplatform.

LazyAdaptiveLayout (github.com) A high-performance, customizable adaptive grid layout for Android Jetpack Compose with lazy loading and adaptive scroll optimization.

Hangman - Built With Compose Multiplatform (github.com) A Kotlin Multiplatform Hangman (Android, Desktop, Web, iOS) built with Compose Multiplatform. Modular architecture with shared game engine, dynamic word catalog (DSL), responsive layouts and more.

TwoFac (github.com) TwoFac is an Open Source, Native, Cross-Platform 2FA App for Watch, Mobile, Desktop, Web and CLI.

SecureVar - Secure Variable Library for Android (github.com) SecureVar is a production-grade Android security library that provides re-sealable secure variables with server-authorized write control.

Project Generator v0.5.0 (github.com) Project Generator v0.5.0 is out, supporting now the latest versions of main components like Gradle and the Android Gradle Plugin.

detekt-rules-koin (github.com) Detekt extension with 51 rules for Koin 4.x - enforces best practices and catches common anti-patterns via static analysis.

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