Antoine v.d. SwiftLee 

📸 Detect barcodes like QR in Xcode's Simulator ✨ @rocketsim.app Camera Simulation supports capturing metadata 🚀 If you're using AVCaptureMetadata or Vision to detect codes, you'll easily be twice as fast during development. In fact, this might be the only way to test your app using the Simulator!

Xcode 27 MCP and higher token costs, AGENTS dot md best practices, iOS 27 weird Dynamic Island behavior. It's what's in tomorrow's SwiftLee Weekly: swiftlee-weekly.com/tomorrow #swiftdevelopment #iosdevelopment #swiftui #swiftlanguage

Not sure if anyone noticed, but I'm slowly rolling out a brand new SwiftLee blog! It was about time :)

Xcode's MCP can burn tokens in the Simulator. www.avanderlee.com/ai-developme... 📸 Screenshots stay in context 📊 7x more output per action #swiftlang #iosdev

Big milestone reached for RocketTrace! 🎉 1,000 traces analyzed 🪲 8,625 issues found ✨ 779 copied Agent prompts It's my new app, basically running Xcode Instruments for you using agents. Have you analyzed your app performance with it already?

I love going deep on improvements, measuring percentage of change along the way. Though, I've not been going as far as Ivan… ivanmagda.dev/posts/swift-...

Running out of tokens every single week? day? Most of it isn't your prompts: it's context your agent re-reads on every turn. Free prompt that audits your last 7 days of sessions and shows where it goes: aifundamentals.dev/token-cleanu... Reply, and share me your results!

Developers who use AI: what are your biggest challenges and questions? I’ll do my best to answer them!

Apparently, you can now use some View? since Swift 6.4. Sarunw explains how it works. sarunw.com/posts/option...

The latest Xcode beta sneaked in a brand new CLI. Artem Novichkov explains what you can do with it and how… artemnovichkov.com/blog/xcode-p...

5 Swift Evolution proposals changed status this week. The tracker checks the official metadata daily and keeps a readable history, so you don't have to monitor every proposal manually. swiftlee-weekly.com/swift-evolut... #swiftlang #iosdev

You should be getting closer to iPhone Duo ready, but if not yet, you'll enjoy this article by… nilcoalescing.com/blog/Arrange...

I've created these visuals for my new AI Fundamentals course, demonstrating efficient context management using subagents. Which variant do you like best?

Hitting Codex limits too often? Your setup might be the problem, not your usage. I found 94% of my tokens were old context being re-read. This free prompt makes your agent find the waste in your own sessions: aifundamentals.dev/token-cleanu... Reply and tell me your biggest findings!

I've always been annoyed that Finder doesn't show folder sizes. Turns out you can easily fix that! ✨ - Press ⌘ CMD + J - Turn on "Calculate all sizes"

If you're a maintainer of open-sourced Swift packages, this is an important change to be aware of! swiftpackageindex.com/blog/swift-6...

Yes, AI makes things easier, but no, I'm not taking it easier. I'm finding myself pushing boundaries, trying to level up recording capabilities for RocketSim. I could've never reached this level without AI, but I'm certainly going to push the limits to give you the best developer tools 🚀

Swift Concurrency Course update: 3 new lessons. 🐞 Debug a crash that compiled without a single warning 🧭 Control where tasks run using executor preferences 🚀 Optimize with Instruments and give your agent measured evidence www.swiftconcurrencycourse.com #swiftlang #iosdev

Agents write more and more of our code, including SwiftUI Views. What it doesn't do as well yet is ensuring great… www.avanderlee.com/swiftui/swif...

Excited for my talk at Do iOS, Amsterdam, in a few weeks. There are still a few tickets available, so who's joining? I'd love to meet you there!

SwiftLee Weekly Issue 346 was sent to 30,755 subscribers with content from @natpanferova.bsky.social, @rocketsim.app, Artem Novichkov, Sarunw swiftlee-weekly.com/issues/346/

Some View?, A Swift 6.4 change for package maintainers, A new CLI shipped in Xcode 27.2 beta. It's what's in tomorrow's SwiftLee Weekly: swiftlee-weekly.com/tomorrow #swiftdevelopment #iosdevelopment #swiftui #swiftlanguage

Had a fantastic time opening SwiftLeeds last week with my keynote on "Bringing back the love of Swift" One thing I struggled with, though: those letters on stage... Fixed it nicely, don't you think? 🫣

I’m looking for iPhone Duo App Store Screenshots as inspiration for my developer tool. Reply with yours, and feel free to add a link to your app for reach 🚀

Differentiate without Color is an important part of your app's accessibility support. Natascha Fadeeva explains what it is,… tanaschita.com/ios-accessib...

What if you want to use Xcode 27's localization skills outside of Xcode? This article by Max Seelemann might come in handy. macguru.dev/using-xcode-...

2 Swift Evolution proposals changed status this week. The tracker checks the official metadata daily and keeps a readable history, so you don't have to monitor every proposal manually. swiftlee-weekly.com/swift-evolut... #swiftlang #iosdev

I have a lot of disk space, but I'm still hitting it super easily with all the agents I control. This article by Karolina Samorek couldn't be… skarol.dev/posts/where-...

A great way to grow is by learning from another one's experience. A thing that resonates a lot with me: building an… thosewhoswift.substack.com/p/devs-for-d...

Practical advise this week based on 4 workflows that I regularly use, combined with the tools that fit… www.avanderlee.com/ai-developme...

I'll be honest, I did notice toolbars sharing a glass background, but I did not know when and why. This article by Sarunw helped… sarunw.com/posts/swiftu...

Watch a simulated mobile attack from first signal to resolution, and see why threat monitoring is essential to the complete, end-to-end protection of your mobile app. Join Guardsquare, this week's SwiftLee sponsor, on Oct 20: hubs.la/Q04x_jcF0

New: Run iOS accessibility audits automatically using your agent: www.rocketsim.app/blog/accessi...

After months of building and beta testing, I'm happy to finally release RocketTrace to… www.avanderlee.com/ai-developme...

Sheets on iPhone Duo are more flexible than you're used to on other devices and @natpanferova.bsky.social tells you all about it. nilcoalescing.com/blog/Present...

You might have heard about TypeSafe's Jev, but did you know it's called a System one model? @peterfriese.dev explains this concept and… peterfriese.dev/blog/2026/sy...

7 Swift Evolution proposals changed status this week. The tracker checks the official metadata daily and keeps a readable history, so you don't have to monitor every proposal manually. swiftlee-weekly.com/swift-evolut... #swiftlang #iosdev

What if you could connect SwiftUI Previews to your agents using Xcode Preview MCP? @fatbobman.bsky.social worked it out. fatbobman.com/en/posts/let...

Find accessibility issues before your users do. 🔍 Find common accessibility issues 🔬 Select and verify manually 🪄 Copy the prompt and let your agent verify

Have you ever pasted an Xcode Instruments trace file into an agent? It works, but it costs a lot of tokens, and agents struggle to find issues. I discussed this with Florian and shared how an app I built solves this with 5.6x fewer tokens and more issues found: youtu.be/cDtgTlDeev0?...

I have years of experience building iOS apps, but I lack knowledge on contacting press. Any tips on getting coverage for an app on popular press websites?

App developers who focus accessibility: you'll enjoy the next update of RocketSim 🚀

Using Claude Code to build your apps using Xcode? @danielsaidi.bsky.social continued my article's… danielsaidi.com/blog/2026/09...

Shipping in RocketSim 16.7.0: An improved accessibility side window 🪟 Liquid Glass controls 📟 StandBy switch ♿ More accessibility controls

SwiftLee Weekly Issue 344 was sent to 30,841 subscribers with content from @danielsaidi.bsky.social, @fatbobman.bsky.social, @jordanmorgan10.bsky.social, @natpanferova.bsky.social, @peterfriese.dev, @rocketsim.app swiftlee-weekly.com/issues/344/

10K Monthly Recurring Revenue: It's a dream many app developers have, and only some will reach. What would future… www.swiftjectivec.com/10k-mrr-in-t...

Shoutout to the App Store Connect team. The new Asset Library, Product Page Optimization, and Custom Product Page updates are fantastic. Just waiting for the day to see macOS support, but hey: I now have an iOS app to work on that does benefit from this! 🎉

Xcode Instruments with AI Agents, System One models in Swift, Xcode Preview MCP. It's what's in tomorrow's SwiftLee Weekly: swiftlee-weekly.com/tomorrow #swiftdevelopment #iosdevelopment #swiftui #swiftlanguage

Missed the iPhone Duo Group Lab? Here's an overview by Anton Gubarenko covering all questions asked and their answers. antongubarenko.substack.com/p/iphone-duo...

2 Swift Evolution proposals changed status this week. The tracker checks the official metadata daily and keeps a readable history, so you don't have to monitor every proposal manually. swiftlee-weekly.com/swift-evolut... #swiftlang #iosdev

Access SF Symbols via the new CLI as Artem Novichkov explains. I do wonder whether an agent really needs this, as… artemnovichkov.com/blog/sf-symb...