21 August 2026

12 new posts across 4 mobile platform sources — 10 worth your time.

One week of Mobile, 10 stories, as published.

Changes for apps in the European Union

Apple is consolidating its business terms for developers in the European Union into a single unified framework. The updated terms introduce a commission on the sale of digital goods and services alongside revisions to the Core Technology Fee.

Why it matters — Developers distributing apps in the EU must adapt to a single set of business terms that alter commission structures and modify the Core Technology Fee.

Apple Developer · 21 August 2026 · Read the original →

Store & Policy

Updated Apple Developer Program License Agreement now available

Apple has updated its Developer Program License Agreement with Attachment 14 to outline new terms for alternative distribution, alternative payments, and business terms in the EU. These terms are scheduled to take effect on October 1, 2026.

Why it matters — Accepting the updated agreement before October 1, 2026, is mandatory for developers utilizing alternative distribution or payment methods in the EU.

Apple Developer · 21 August 2026 · Read the original →

Performance

Tinder cuts app cold starts by 47% with new R8 Configuration Analyzer

Tinder successfully reduced its Android app cold start times by 47% as its codebase grew in complexity. The engineering team achieved this optimization by adopting the new R8 Configuration Analyzer to streamline app shrinking.

Why it matters — Using the R8 Configuration Analyzer can help large Android codebases achieve up to a 47% reduction in cold start times.

Android Developers · 21 August 2026 · Read the original →

Performance

Preparing your app for broader memory limits

Google highlights a shifting trend where new Android devices are maintaining or even decreasing physical memory capacity. The post emphasizes the growing necessity of memory optimization to keep apps fast and responsive under these constraints.

Why it matters — With new Android devices maintaining or reducing physical memory, aggressive memory optimization is critical to prevent system-initiated app terminations.

Android Developers · 21 August 2026 · Read the original →

Practice

Signatures, be true: domain errors and functional handling in Kotlin

This post explores functional programming patterns in Kotlin, focusing on type-safe system design and domain error handling. It details how these practices are applied to build reliable and consistent authentication and verification systems.

Why it matters — Implementing functional error handling and type-safe signatures in Kotlin improves the reliability of critical platform layers like authentication.

Kotlin · 21 August 2026 · Read the original →

iOS & Swift

Embedded Swift Improvements Coming in Swift 6.4

Swift 6.4 brings improvements to Embedded Swift, a subset of the language tailored for highly constrained environments like microcontrollers. It uses a specialized compilation mode to produce significantly smaller binaries while keeping the vast majority of the language intact.

Why it matters — Embedded Swift's specialized compilation mode allows compiling a subset of Swift into significantly smaller binaries for resource-constrained environments.

Swift.org · 21 August 2026 · Read the original →

Android & Kotlin

Jetpack XR SDK core libraries reach beta: The next milestone for Android XR

The Jetpack XR SDK core libraries have reached beta status, marking a transition from preview to production-ready APIs. This SDK allows developers to build and scale immersive spatial experiences for Android XR headsets and wired glasses.

Why it matters — The transition of Jetpack XR SDK core libraries to beta provides a stable API surface for moving spatial apps from preview to production.

Android Developers · 21 August 2026 · Read the original →

Android & Kotlin

Play Billing APIs Deprecated

Google Play Billing APIs, deprecated since May 19, 2026, will be shut down by August 31, 2028. Additionally, older subscription APIs and `SubscriptionPurchaseV2` fields, deprecated May 21, 2025, will be shut down by August 31, 2027.

Why it matters — Developers must migrate from deprecated Play Billing APIs by August 31, 2028, and older subscription APIs by August 31, 2027, to maintain billing functionality.

developer.android.com · 21 August 2026 · Read the original →

Android & Kotlin

Android Deprecates RenderScript, Display APIs

Android Developers updated documentation on August 14, 2026, confirming RenderScript APIs are deprecated since Android 12, with hardware acceleration expected to cease over time. Display APIs like `getSize()` and `getMetrics()` are also deprecated in favor of `WindowMetrics`.

Why it matters — Developers should migrate from RenderScript to leverage GPU acceleration and update display-size queries to `WindowMetrics` to ensure future compatibility and performance.

developer.android.com · 21 August 2026 · Read the original →

Android & Kotlin

Android August System Updates Released

Google released its August 2026 System Updates, including Google Play services v26.32 with new developer features for Maps, and Android WebView v152 with security and web content display improvements. Wear OS also gains more accurate workout routes via server-side location processing.

Why it matters — Developers can leverage new APIs for Maps and WebView functionality, and Wear OS apps may see improved location data for fitness tracking.

9to5Google · 21 August 2026 · Read the original →

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