Android Weekly is a free newsletter that helps you to stay cutting-edge with your Android Development.

A complete guide to migrating from Google Play Billing v7 to v8 (and preparing for v9)

Jaewoong Eum walks through the full Play Billing Library v7-to-v8 migration, covering removed APIs, updated flows, and new v8 behaviors.

Adding Cross-Module Routing to Navigation 3 with KSP: nav3-helper Design and Usage

Aleyn Patten walks through nav3-helper, a KSP-powered library for type-safe cross-module routing in Compose Navigation 3.

Migrating from Koin DSL to Koin Annotations in a Multimodule Project: A Step-by-Step Guide

Gabriel Bronzatti Moro walks through migrating a Compose Multiplatform multi-module project from Koin DSL to Koin Annotations, covering KSP setup, convention plugins, and gradual module-by-module adoption.

How Karrot Increased Sales with Gemini & Firebase AI Translation

Thomas Ezan and Tracy Agyemang show how Karrot used Firebase AI Logic and Gemini Flash Lite to add real-time translation, boosting buyer conversion 2.4x.

The Clean Line: Swift Export for KMP

KMP Bits demonstrates Kotlin 2.3.0's Swift Export, showing how Kotlin enums arrive as real Swift enums, eliminating ObjC bridge adapters.

I Built a Leaner Supabase SDK for Kotlin Multiplatform

Android Poet replaces the official 19,000-line Supabase SDK with a 3,600-line KMP alternative using Result types, explicit error handling, and DI-friendly design.

Collection Literals in Kotlin

Marcin Moskała explores the new experimental collection literals syntax in Kotlin 2.4, allowing list and set creation with box brackets.

Jetpack Compose Animations: Worked Examples

Jaewoong Eum walks through a growing catalog of self-contained Jetpack Compose animation examples, each with tweakable constants and motion explanations.

Promies Feedback Board: A simple way to collect user feedback in your apps

Mike Yerou introduces Promies Feedback Board, a simple hub for collecting, voting on, and managing in-app user feedback.

Tuning Compose Themes Live: A Visual Feedback Loop for UI Design

Jaewoong Eum demonstrates live Compose theme variant exploration using an MCP tool and hot reload, eliminating rebuild cycles.

Android App Security: Practical Steps Every Developer Must Follow

Paresh Mayani outlines practical Android security steps covering encrypted storage, certificate pinning, biometric auth, and Play Integrity.

How Gratitude Widgets Boosted User Retention 25%

Ash Nohe and Amrit Sanjeev show how migrating Android widgets from XML to Jetpack Glance boosted retention 25% for the Gratitude app.

Verifying Hardware-Backed Keystore on a Custom Android Build

James Cullimore proves TEE-backed keystore support on a custom Android device and explores the Binder service trust boundary for secure key operations.

Senior Mobile Engineer - KMP (Remote (Spain/Portugal/Germany/UK))

At Yazio, our product squads drive our mission to help people live healthier lives. We’re looking for a product-minded Senior Mobile Engineer to build impactful features for millions. You’ll work closely with Product, Engineering, and Design, using Kotlin Multiplatform to deliver for iOS & Android.

cw-json 0.3.0

A Kotlin Multiplatform library adding Relative JSON Pointer support for navigating and comparing JSON structures.

compose-animations

A collection of Jetpack Compose animation playgrounds with live hot-reload editing via Compose HotSwan.

Kotlin Ecosystem Mentorship Program: Results and Winners

JetBrains announces the results of the Kotlin Ecosystem Mentorship Program pilot, selecting a grand prize pair for KotlinConf 2026.

Beginner's Guide to Mobile App System Design (+ Tips for Interviews!)

Philipp Lackner walks through the key components of mobile app system design, with tips for technical interviews.

April 2026: Firestore search and joins, SQL Connect realtime, Dart Functions, and more!

Firebase covers April 2026 updates including Firestore search, SQL Connect realtime, and experimental Dart Functions support.

How Google made their Android app start faster

Android Developers covers how the Google app team diagnosed and improved Android startup performance.

Kotzilla MCP Server Introduction

The Kotzilla channel introduces their new MCP Server for AI-assisted Koin performance monitoring.

Firestore Enterprise: Mastering pipeline operations

Firebase's Morgan Chen goes under the hood of the Firestore query engine, demonstrating pipeline operations for sorting and aggregation.

Effective Kotlin Item 32: Consider factory functions instead of secondary constructors

kt.academy covers why factory functions are often preferable to secondary constructors in Kotlin.