Tim Sneath (@timsneath) header
Tim Sneath (@timsneath) profile picture

Tim Sneath

@timsneath

Developer tools and frameworks at Apple. I aspire to build delightful products, and to make others smile.

Joined April 2007
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Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)Photo by Tim Sneath (@timsneath)
I haven't been this excited about smartphone apps since 2008. The iPhone Duo seems to have galvanized the developer community, leading to an explosion of novel concepts and new designs. Feels like the iPhone 3G all over again, and I'm *very much* here for it
Image from Michael Fisher (@Captain2Phones)
Image from Michael Fisher (@Captain2Phones)
Image from Michael Fisher (@Captain2Phones)
Image from Michael Fisher (@Captain2Phones)
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John Ternus (@johnternus) profile picture
John Ternus
@johnternusOct 15
Replying to @finkd
Congrats to the team! Amazing to run a model of Muse Spark Open's caliber and scale this efficiently, right from your desk. Mac Studio keeps pushing the boundaries of on-device AI!
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If you're using Claude Code, Codex or Cursor to prototype for the iPhone Duo, make sure to run this command, with the argument underlined in red Because Xcode 27.1 ships with updated coding skills that specifically detail how to handle app resistibility for the iPhone Duo
Image from Vincent Pradeilles (@v_pradeilles)
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Ivan Tokar (@ivatokar) profile picture
Ivan Tokar
@ivatokarSep 23
Swift 6.4 has a couple of changes that make Swift outside Apple platforms feel more deliberate. Swift Build is now the default build engine in SwiftPM, so the same build system is used across macOS, Linux and Windows. Subprocess also reached 1.0, giving Swift a stable cross-platform API for launching and interacting with processes. Neither feature is flashy, but together they remove some of the “platform-specific glue” that CLI, server-side and cross-platform Swift projects have historically needed. That is the part of Swift 6.4 I find most interesting: the tooling around the language is becoming more portable, not just the language itself. #Swift #ServerSideSwift swift.org/blog/swift-6.4-rel…
Swift 6.4 Released

Swift 6.4 Released

Swift 6.4 is now available. Swift aims to be a great choice across the stack, from apps and servers to systems code, embedded devices, and the browser. This release deepens that support, and makes...

swift.org
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This is even faster in beta 2! Check the release notes ☺️
Luca Bernardi (@luka_bernardi) profile pictureLuca Bernardi
@luka_bernardiJun 8
A great behind-the-scenes improvement is ContentBuilder – which has been a massive undertaking – and delivers meaningful improvements to type checking performance.
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MacRumors.com (@MacRumors) profile picture
MacRumors.com
@MacRumorsJun 12
Notion Is Migrating to SwiftUI, Apple Confirms at WWDC macrumors.com/2026/06/12/not…
Image from MacRumors.com (@MacRumors)
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It’s amazing how it really just works. The Siri we’ve always wanted actually exists now.
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ClaudeDevs (@ClaudeDevs) profile picture
ClaudeDevs
@ClaudeDevsJun 10
New for Apple developers: Foundation Models support for Claude lets developers use Apple's Foundation Models framework to call Claude for multi-step reasoning, code generation, and longer context.
Image from ClaudeDevs (@ClaudeDevs)
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Richard Seroter (@rseroter) profile picture
Richard Seroter
@rseroterJun 9
Bringing the latest Gemini models to Apple developers blog.google/innovation-and-a… < easier access to Gemini models, along with Gemini in Xcode for coding tasks. The former is courtesy of @Firebase (firebase.blog/posts/2026/06/…).
Image from Richard Seroter (@rseroter)
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Min Choi (@minchoi) profile picture
Min Choi
@minchoiFeb 27
Did Apple just kill every iOS vibe coding app? Apple just dropped Xcode 26.3 with agentic coding. Claude Code + Codex are now built into Xcode. And with MCP support.
Greg Joswiak (@gregjoz) profile pictureGreg Joswiak
@gregjozFeb 26
Xcode 26.3 with Claude Agent & Codex hits the Mac App Store today! With advanced reasoning capabilities in Xcode, you can streamline workflows and build faster. And MCP support lets you easily connect other compatible agents.
MacBook Pro screen with Xcode open to a project titled “Landmarks.” A pop-up shows Intelligence settings, and iPhone 17 Pro preview to the right displays the Landmark Split View app.

ALT MacBook Pro screen with Xcode open to a project titled “Landmarks.” A pop-up shows Intelligence settings, and iPhone 17 Pro preview to the right displays the Landmark Split View app.

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Greg Joswiak (@gregjoz) profile picture
Greg Joswiak
@gregjozFeb 26
Xcode 26.3 with Claude Agent & Codex hits the Mac App Store today! With advanced reasoning capabilities in Xcode, you can streamline workflows and build faster. And MCP support lets you easily connect other compatible agents.
MacBook Pro screen with Xcode open to a project titled “Landmarks.” A pop-up shows Intelligence settings, and iPhone 17 Pro preview to the right displays the Landmark Split View app.

ALT MacBook Pro screen with Xcode open to a project titled “Landmarks.” A pop-up shows Intelligence settings, and iPhone 17 Pro preview to the right displays the Landmark Split View app.

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✍️ New Post ✍️ Thoughts on Xcode's 26.3's agentic coding: - How to get skills working - Use Xcode's MCP with other tools - Impressions Check it out: swiftjectivec.com/Agentic-Co…
Agentic Coding in Xcode 26.3 with Claude Code and Codex

Agentic Coding in Xcode 26.3 with Claude Code and Codex

Xcode just put out agentic support, baked right in. Let’s take a look.

swiftjectivec.com
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Tim Sneath retweeted
sabesh 📟 (@sabeshbharathi) profile picture
sabesh 📟@sabeshbharathiFeb 3
using the new Xcode 26.3's agentic coding to build some interesting things 👀 Finally, we have agents living in Xcode that can ACTUALLY perform meaningful tasks, utilize MCPs, iteratively build, take screenshots, test and code - hype.
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Paul Hudson (@twostraws) profile picture
Paul Hudson
@twostrawsFeb 2
I showed my 12-year-old daughter how to chat to Claude using Xcode's Coding Assistant tab, and she spent the next two weeks building a game. It's out now on the App Store, and she's feeling very proud of herself ✨ apps.apple.com/gb/app/scramb…
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Max Weinbach (@mweinbach) profile picture
Max Weinbach
@mweinbachFeb 3
One of the coolest parts has gotta be connecting external coding agents to Xcode via MCP so you can use any agent for Xcode
Image from Max Weinbach (@mweinbach)
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Honestly so cool (and necessary!) to see Xcode break from only releasing large updates once a year to just releasing great stuff throughout the year!
MacRumors.com (@MacRumors) profile pictureMacRumors.com
@MacRumorsFeb 3
Xcode 26.3 Lets AI Agents From Anthropic and OpenAI Build Apps Autonomously macrumors.com/2026/02/03/xco…
Image from MacRumors.com (@MacRumors)
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Would you believe that adding iCloud sync to an app can be as simple as adding a single line of code?
The following code: $0.defaultSyncEngine = try! SyncEngine( for: $0.defaultDatabase, tables: Reminder.self, RemindersList.self, Tag.self, ReminderTag.self )

ALT The following code: $0.defaultSyncEngine = try! SyncEngine( for: $0.defaultDatabase, tables: Reminder.self, RemindersList.self, Tag.self, ReminderTag.self )

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Devin (@JustMeDevin) profile picture
Devin@JustMeDevin15 Sep 2025
Loving Foundation Model access on iOS 26, so many possibilities. Here are a few simple features that we’ve added in Crouton so far 😊
Image from Devin (@JustMeDevin)
Image from Devin (@JustMeDevin)
Image from Devin (@JustMeDevin)
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Claude (@claudeai) profile picture
Claude
@claudeai15 Sep 2025
Now generally available in Xcode 26: Developers can connect their Claude account to Xcode and power coding intelligence features with Claude Sonnet 4. Generate documentation, explain highlighted code, generate previews and playgrounds, and more with Claude in Xcode.
Image of Claude Sonnet 4 accessible in Xcode IDE.

ALT Image of Claude Sonnet 4 accessible in Xcode IDE.

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Xcode 26 is now available on the Mac App Store. Sign in with your ChatGPT account and code with GPT-5 built-in.
OpenAI Developers (@OpenAIDevs) profile pictureOpenAI Developers
@OpenAIDevs29 Aug 2025
GPT-5 is now built into Xcode 26!
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