Mobile

Native is now the future of mobile at Shopify (2026) - Shopify

Coding agents changed what it costs to build mobile apps twice. Here’s why Shopify is moving from React Native back to Swift and Kotlin.

Introducing WARP: fixing mobile Internet performance and security

Today we're excited to announce what we began to plan more than two years ago: the 1.1.1.1 App with WARP performance and security technology. We built Warp from the ground up to thrive in the harsh conditions of the modern mobile Internet.

From zero to 10 million lines of Kotlin

We’re sharing lessons learned from shifting our Android development from Java to Kotlin. Kotlin is a popular language for Android development and offers some key advantages over Java.  As of today,…

Translating Java to Kotlin at Scale

Meta has been on a years-long undertaking to translate our entire Android codebase from Java to Kotlin. Today, despite having one of the largest Android codebases in the world, we’re well pas…

Five years of React Native at Shopify (2025) - Shopify

Five years ago, we announced that React Native (RN) is the future of mobile at Shopify. Today, we are excited to share the progress we&#x27;ve made, lessons learned, and what the future holds. To recap, we decided to switch to RN for 3 main reasons: Write it once - Stop building the same features twice, once on iOS and once on Android Talent portability - Enable devs to work fluently across iOS, Android, and Web Ship more value - Spend more time delivering value to users instead of chasing feature parity We’re happy to share that our transition has been quite successful: Not having to build the same features twice has given us a step change in productivity Engineers are able to work across web and mobile allowing teams to do more with the same number of people and unlocked new growth opportunities Maintaining feature parity between iOS and Android has become a non-issue, freeing up capacity to ship a lot more value Our apps are blazing fast (<500ms screen loads) and stable (>99.9% crash-free sessions) We continue to leverage native wherever it is the best tool for the job, giving us the best of both worlds Over the past 5 years, we have migrated all our apps to React Native. Instead of using a one-size-fits-all approach to do so, each team chose when and how to migrate their app. This allowed them to continue shipping features while also aligning with our strategy of leveraging RN. What did we learn? React Native apps are fast We care very deeply about performance at Shopify. As our CEO Tobi Lutke says, “not all fast software is great, but all great software is fast”. The biggest question we had while switching to RN and the main reason we didn’t do it sooner was whether we’d be able to achieve our performance goals with it. Before making the decision to switch, we did extensive prototyping which led to promising results. We also saw all the work that Meta

Netflix Now Streaming AV1 on Android

By Liwei Guo, Vivian Li, Julie Beckley, Venkatesh Selvaraj, and Jeff Watts

Netflix Android and iOS Studio Apps — now powered by Kotlin Multiplatform

By David Henry & Mel Yahya

Announcing Lottie 4.0 for iOS

A new rendering engine with significant performance improvements powered by Core Animation.

Migrating our Largest Mobile App to React Native - Shopify

In 2020, we announced that React Native is the future of mobile at Shopify. As part of that journey, we’ve been migrating Shopify Mobile (our largest app at 300 screens per platform) from native to React Native. Here’s how it’s going.

Announcing Envoy Mobile

Today we are thrilled to announce the initial OSS preview release of Envoy Mobile, an iOS and Android client network library that brings…

Migrating to React Native&#x27;s New Architecture (2025) - Shopify

Shopify successfully migrated two of its largest apps, Shopify Mobile and Shopify Point of Sale (POS) to React Native&#x27;s New Architecture while maintaining weekly releases and serving millions of merchants. This migration involved a complex codebase with hundreds of screens and native modules, extensive custom components, and deep integration with first-party libraries like FlashList.

A deep dive into Airbnb’s server-driven UI system

How Airbnb ships features faster across web, iOS, and Android using a server-driven UI system named Ghost Platform 👻.

GitHub Package Registry will support Swift packages

Today we’re excited to announce that we’ll be adding support for Swift packages to GitHub Package Registry. Swift packages make it easy to share your libraries and source code across your projects and with the Swift community.

An Exciting Update to Discord for Android

Project LightSpeed: Rewriting the Messenger codebase for a faster, smaller, and simpler messaging app

We are excited to begin rolling out the new version of Messenger on iOS. To make the Messenger iOS app faster, smaller, and simpler, we rebuilt the architecture and rewrote the entire codebase, whi…

Superpack: Pushing the limits of compression in Facebook’s mobile apps

Managing app size at Facebook is a unique challenge: Every day, developers check in large volumes of code, and each line of code translates into additional bits in the apps that people ultimately d…

Messaging sync — Scaling mobile messaging at Airbnb

By: Zhiyao Wang, Michelle Leon, Jason Goodman, Nick Reynolds, Julia Fu, Jeff Hodnett, Manuel Deschamps, John Pottebaum, and Charlie Jiang

Meta joins Kotlin Foundation

We are proud to announce that Meta has officially joined the Kotlin Foundation as a gold member, marking a significant milestone in our ongoing commitment to Kotlin and the broader Android developm…

Introducing Bento

Introducing Bento Tyler Argo, Software Engineer May 2, 2019 Today we’re proud to introduce Bento, an open source framework for building modularized Android user interfaces, created here at Yelp. Over...

The evolution of Facebook’s iOS app architecture

Facebook for iOS (FBiOS) is the oldest mobile codebase at Meta. Since the app was rewritten in 2012, it has been worked on by thousands of engineers and shipped to billions of users, and it can sup…

Seamlessly Swapping the API backend of the Netflix Android app

How we migrated our Android endpoints out of a monolith into a new microservice

React Native is the Future of Mobile at Shopify - Shopify

After years of native mobile development, we’ve decided to build all of our new mobile apps using React Native. As I’ll explain, that decision doesn’t come lightly.

Mobile Bridge: Making WebViews Feel Native (2025) - Shopify

We built a framework that transforms WebViews in the Shopify app to feel native and solve performance and integration challenges without rebuilding for mobile.

A Kotlin Style .copy Function for Swift Structs - Shopify

Swift’s struct isn’t as convenient as Kotlin’s data class because it doesn&#x27;t have a similar copy function. Learn how to adopt this pattern in Swift.