28 August 2026

9 new posts across 3 mobile platform sources — 9 worth your time.

One week of Mobile, 9 stories, as published.

Elevating app quality: Reducing memory usage and improving device migration

Google Play is introducing two new quality requirements for Android apps and games. The updates mandate a reduced app memory footprint and require developers to provide a secure, seamless device-to-device migration experience.

Android Developers · 28 August 2026 · Read the original →

iOS & Swift

Update: New domain for Sign in with Apple

Apple is transitioning the domain used for Sign in with Apple private relay email addresses from privaterelay.appleid.com to private.icloud.com. While existing addresses will continue to work, new addresses will use the new domain, and iCloud+ Hide My Email addresses will remain on icloud.com.

Why it matters — Developers must update their email server configuration and allowlists to accept the new private.icloud.com domain to prevent communication failures with new users.

Apple Developer · 28 August 2026 · Read the original →

Android & Kotlin

How WhatsApp Upgraded to Secure, Seamless Sign-In for 1 Billion Users with Passkeys

This case study details how WhatsApp integrated and scaled Passkeys to secure sign-ins for over one billion global users. It highlights the engineering efforts required to deploy passwordless authentication seamlessly across diverse regions and devices.

Why it matters — It provides a real-world blueprint for migrating a massive, global user base to passwordless authentication under challenging, heterogeneous device environments.

Android Developers · 28 August 2026 · Read the original →

Store & Policy

Tax and price updates for apps, In-App Purchases, and subscriptions

Apple is adjusting App Store pricing and developer proceeds across various storefronts to account for changes in local tax regulations and foreign exchange rates. The adjustments leverage publicly available exchange rate data from reputable financial media.

Why it matters — Developers selling globally must review how these tax and exchange rate adjustments affect their net proceeds and localized pricing tiers.

Apple Developer · 28 August 2026 · Read the original →

Store & Policy

Ensuring Safety in the Generative AI Ecosystem: Protecting Users from Non-Consensual Intimate Content

Google Play is addressing safety challenges introduced by generative AI features in mobile apps, specifically targeting the prevention of non-consensual intimate content. The update outlines trust and safety expectations for developers integrating GenAI capabilities.

Why it matters — Apps utilizing generative AI must implement strict content filtering and safety guardrails to comply with Google Play's evolving trust and safety policies.

Android Developers · 28 August 2026 · Read the original →

Cross-Platform

Compose Multiplatform 1.12.0 Released

The 1.12.0 release of Compose Multiplatform introduces an MCP server for AI agents, hot reload capabilities, and automatic font fallback for web. It also updates the desktop window and dialog APIs to version 2 for finer control over window states.

Why it matters — The addition of hot reload and automatic web font fallbacks addresses key developer experience and rendering consistency pain points in multiplatform UI development.

Kotlin · 28 August 2026 · Read the original →

Tooling

Klibs.io Grows to 4,200+ KMP Projects With Smarter Discovery and New AI Integrations

The Kotlin Multiplatform library catalog klibs.io has expanded to over 4,200 projects. The platform now features improved discovery tools and a new Model Context Protocol (MCP) server to feed up-to-date library data directly into AI-driven development workflows.

Why it matters — The integration of an MCP server allows developers to expose KMP library metadata directly to AI coding assistants, streamlining dependency discovery during development.

Kotlin · 28 August 2026 · Read the original →

Store & Policy

Apple Revamps EU App Store Terms

Apple introduced unified business terms for EU apps, effective October 1, 2026. The Core Technology Fee is replaced by a 5% Core Technology Commission for external transactions, and new commission rates apply to App Store purchases and alternative payments.

Why it matters — Developers distributing apps in the EU must comply with new commission structures and can now combine Apple IAP with alternative payment methods, requiring potential payment flow adjustments.

developer.apple.com · 28 August 2026 · Read the original →

Android & Kotlin

Kotlin 2.4.0 Released with Stable Context Parameters

Kotlin 2.4.0 was released, introducing stable context parameters, explicit backing fields, and support for Swift packages as dependencies. Kotlin/Native gained updates to Swift export, and Kotlin/Wasm now has incremental compilation enabled by default.

Why it matters — Developers can leverage new language features like stable context parameters and explicit backing fields, and Kotlin/Native projects can now directly use Swift packages.

blog.jetbrains.com · 28 August 2026 · Read the original →

Another week of updating build configurations and reading tax law.

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