Do iOS 2025

Conference Agenda

• 2025-11-11 - Workshops

  • 09:00Workshop

    Workshop: Intro to App Intents

    In this workshop you'll learn to use App Intents to make an app more discoverable and a more flexible part of the user experience. App Intents is how your app connects to Spotlight, Shortcuts, Siri, Widgets, Controls, and Apple Intelligence.

    This is a big year for App Intents.

    Apple has been laying the foundation for years. Last year they really pushed it as a way of connecting to Apple Intelligence and this year they’ve gone back and really smoothed out a lot of the APIs and increased the power.

    This hands-on workshop is for people who are new to App Intents. We build an example from the ground up and use it introduce all aspects of Intents and provide examples of using them in Shortcuts, Siri, Spotlight, and more.

    Required tools: Mac with Xcode 16.0 or greater

    Daniel Steinberg

    Daniel loves to write about, teach and code for Apple platforms using Swift. Daniel is the author of more than a dozen books including the best-selling books A Functional Programming Kickstart, A SwiftUI Kickstart, A Swift Kickstart and Dear Elena. Daniel presents iOS, Functional Programming, SwiftUI, and Swift training and consults through his company Dim Sum Thinking.

    

    Daniel Steinberg

  • 09:00Workshop

    Workshop: Using Instruments to write more performant SwiftUI code

    Join Donny Wals for a workshop about SwiftUI performance.

    Have you ever wondered what makes SwiftUI slow?

    In this workshop you’ll learn how to solve common problems in SwiftUI apps. We’ll talk about how SwiftUI looks at and compares your views to determine whether they should be redrawn, how we can use Instruments to gain insights into what your app is doing, and how we can optimize our views and models to lean into SwiftUI’s strengths.

    We’ll analyse a sample app that has several issues that you might have in your own apps. Some will be obvious, others are more hidden. Together, we’ll go through the app and we’ll figure what we should do to improve the app’s performance.

    By the end of this workshop you will have a much better understanding of how SwiftUI works, and you’ll be able to architect code that leans into SwiftUI’s strengths.

    Donny Wals

    Donny is a passionate and curious iOS developer, author and speaker. He has written several books on iOS development and has delivered dozens of talks and workshops over the past years. Next to iOS development he’s a huge cat lover and he likes dabbling on his guitars.

    

    Donny Wals

  • 09:00Workshop

    Workshop: Building Connected Devices with Embedded Swift

    Explore the world of embedded development using Swift!

    In this hands-on workshop, you’ll build real IoT-style applications using microcontrollers and embedded Linux boards with WiFi, GPIO, and BLE capabilities — all programmed in Swift.

    During this workshop you’ll use Swift to:

    • Create a custom Bluetooth service to broadcast device states.
    • Control your hardware device from a mobile device
    • Learn basic hardware skills like controlling a LED, and observing a sensor or button

    Join us and discover how far Swift can take you. Whether you’re building the next smart device or just love pushing the boundaries of what Swift can do, this workshop will get you there!

    Note: Hardware included.

    Joannis Orlandos

    Joannis Orlandos is a pioneer in the cross-platform Swift ecosystem. As a member of various workgroups, including the Swift Server and Android workgroups, Joannis helps drive the ecosystem in new directions. As a maintainer of widely used opensource projects like Vapor 3, Hummingbird 2 and MongoKitten, his work powers critical infrastructure at many companies including Apple

    Through his company, Unbeatable Software B.V., he builds full-stack Swift products including scalable backends, apps and embedded software. Joannis is passionate about bringing Swift to all corners of the world, empowering developers to build performant and safe code that’s highly maintainable and expressive.

    

    Joannis Orlandos

  • 17:00Drinks

    Drinks

    At the end of the workshop all attendees, Donny, Daniel, and Jeroen will have a drink together.

    On the 2th floor, in the NEMO Science Museum Cafe.

• 2025-11-12 - Conference Day 1

  • 08:30Logistics

    Doors open

    Get into the venue. Mingle and get to know each other.

  • 09:00Welcome

    Welcome to Do iOS Day 1

    We’re happy to have you as an attendee, an amazing line-up of speakers awaits. Before getting started, Jeroen takes you through the practical details of the conference.

    

    Jeroen Leenarts

  • 09:15Talk

    The importance of Privacy on iOS

    A lot of time Privacy of my data as a user is not a priority for Developers. Wether it’s my calendar, my contacts, my location, I want as a user to be able to use an app without all of those attacks in my privacy.

    Manuel will summarise some things an iOS developer should do to ensure the most critical user can still use an app in some regards, and not just say “I need all your information” like on other platforms. This is the beauty of iOS, being able to have fine grained control over your data (although not enough) so let’s do this all together, as a beautiful community concerned by Privacy.

    Manuel Carrasco Molina

    Started with his C64 at age 11 in 1987. Manuel “Stuff” Carrasco Molina became a Pro Software Dev in 1997 after 3 years of CS. Started the first french podcast about Apple in 2005. Started developing for iOS in 2008. With Swift since 2014 (pre-1.0).

    

    Manuel Carrasco Molina

  • 10:00Break

    Coffee

    Time for a break.

  • 10:45Talk

    DeviceCheck - Securing your App’s Communication

    The DeviceCheck Framework has been around since iOS11 but nobody has ever really heard about it. At least not me… I stumbled opon this when playing around with some new Firebase Service. They enforce their own version of this called AppCheck for some services by now. So I wanted to find out how it works and dug deeper.

    In this talk I will take a look at the two services the framework provides: DeviceIdentification and AppAttestation. I will show client and server implementation for iOS and Vapor and show how to make your network communication more secure.

    It’s not a silver bullet, but an alternative or addition to certificate pinning and another tool in our iOS Dev Toolbelt.

    Peter Kurzok

    Software Architect, Photographer, Musician, Dad. I started out writing my diploma thesis on a multitouch finger detection library—then the iPhone arrived and changed everything. Fast forward 18 years, I turned my hobby into a job and work as an iOS developer at MaibornWolff, building apps for clients like BMW, Rolls-Royce and Deutsche Post. I used to spent my spare time with my camera roaming through nature or playing the bass in rock cover band. But in recent years my 3 kids keep me busy.

    

    Peter Kurzok

  • 11:30Talk

    Cryptography 101: What Every Swift Developer Should Understand

    In a previous role as the tech lead of a team building a digital identity solution, Eric often saw developers using cryptography without fully grasping it.

    Whether during hiring, onboarding, or working with partners, Eric noticed a general lack of understanding about how the pieces fit together and why they work the way they do under the hood..

    This talk aims to demystify the core concepts of cryptography (hashing, encryption, and digital signatures) in a way that’s both accessible and directly useful. We won’t dive into algorithmic details or math-heavy theory. Instead, Eric will give you the conceptual tools to understand what’s happening, why it matters, and how to use it responsibly in your apps.

    With those foundations, Eric will walk through practical examples relevant to Swift and iOS development.

    This talk is aimed at any developer with a basic understanding of Swift. No prior knowledge of security or cryptography is required. Attendees will gain a practical understanding of core cryptographic concepts and how they apply to everyday development tasks, helping them build more secure, privacy-conscious apps.

    Eric Bariaux

    Eric, a Software Engineer by trade and a Geek at heart, has had numerous encounters with development in the Apple software ecosystem throughout his career, starting from his early professional days developing on a NeXTstation. Currently, Eric’s focus lies in Personal Knowledge Management and wearable AI solutions on various Apple platforms.

    

    Eric Bariaux

  • 12:15Break

    Lunch

    Time for lunch

  • 13:15Talk

    What Really Happens to Your iOS App During Compilation - and What it Exposes

    In this session we’ll dissect your .xcarchive and .ipa to show you exactly what Xcode does with your source code.

    We’ll cover the compilation process, Mach‑O binaries, symbol tables, Info.plist, Obj-C/Swift metadata, resource catalogs, Apple signing and more. We’ll demonstrate how automated tools are used to reconstruct control flow and reveal sensitive data. Then, we show how attackers can replace or patch components inside the bundle, re‑sign it, and distribute a repackaged version. Finally, we’ll outline targeted techniques to make analysis and tampering of sensitive areas significantly harder.

    Pascal Jungblut

    Pascal Jungblut is a software engineer at Guardsquare, where his team works on the iOS analysis functions in AppSweep, a mobile app security testing tool, and iXGuard, compiler-based mobile app protection for iOS apps. After a period as a freelancer and the completion of his Ph.D., Pascal entered the field of mobile app security, focusing on the automatic detection of security issues in iOS and Flutter binaries. He has worked on static analysis of MachO binaries as well as the LLVM-based protection.

    This talk is a sponsored by Guardsquare.

    

    

    Pascal Jungblut

  • 14:00Talk

    Cross-Platform Swift - Reusing Code between iOS and Android

    Cross-platform frameworks are taking over the world.

    Most of those apps demonstrate their technology through components that don’t quite feel right on iOS. The reason for these frameworks? Code reuse, resulting in saved costs and developer time.

    But what if you could achieve the same using Swift?

    In this talk, we’ll cover the new Swift on Android project by the Swift Android Workgroup. You’ll learn about the advantages of Swift on Android, and how it compares to existing ecosystems. Discover the status of the project, and find out where it’s headed to next!

    Joannis Orlandos

    Joannis is a veteran OpenSource maintainer in the Swift community. He’s a member of the Swift Android Workgroup, Swift Server Workgroup and the Information Architecture Project for the Swift Website Workgroup. As a member of these projects, Joannis maintains high profile libraries used by many companies, including Apple, such as Hummingbird, MongoKitten and Citadel, while contributing to many more such as VSCode, Embedded Swift, Android, OpenTelemetry, Vapor and more.

    

    Joannis Orlandos

  • 14:45Break

    Coffee

    Time for a break.

  • 15:30Talk

    Swift Concurrency in 6.2: Patterns & Pitfalls Nobody Told You About

    Swift 6.2 introduces stricter concurrency rules—Sendable, actor isolation, and priority enforcement—all of which reshape how we write async Swift. This talk unpacks real-world pitfalls, surprising edge cases, and modern concurrency patterns that actually hold up in production.

    Swift Concurrency made writing async code easier—until Swift 6.2 made it stricter. With enforced Sendable, region-based actor isolation, and tighter priority checks, it’s now easier than ever to run into unexpected compiler errors or subtle runtime bugs.

    In this talk, I’ll walk through real-world examples and live Xcode demos to explore: • How Swift 6.2 enforces actor isolation and what that means for your code • When Sendable really matters—and how to conform without overcomplicating things • Common reentrancy issues with actors, and simple patterns to avoid them • Using TaskGroup, MainActor.run, and structured concurrency effectively under the new model • How to debug async hangs, race conditions, and flaky behavior in production

    You’ll leave with reliable patterns, a stronger grasp of modern Swift concurrency, and the confidence to ship safe, performant async code in Swift 6.2 and beyond.

    Kanagasabapathy Rajkuma

    I’m a Senior iOS Developer with over 10 years of experience building production-grade Swift apps across startups and enterprise teams. My current focus is on Swift Concurrency, developer tooling, and scalable architecture.

    I regularly speak at meetups like Swift Bengaluru and Swift Chennai, and enjoy sharing practical insights from real-world projects—whether it’s debugging tricky async/await issues, implementing structured concurrency, or integrating AI tools into the iOS workflow.

    

    Kanagasabapathy Rajkumar

  • 16:15Talk

    The enemy within: how UIKit mindset is leaking into your SwiftUI views

    As we embrace SwiftUI, it’s easy to think that UIKit is a thing of the past. But its influence lingers in our approach to building views. I’ve been tracking SwiftUI anti-patterns that originate from UIKit. Now, I want to share what I found to help you avoid them.

    As SwiftUI becomes more widely adopted, it’s easy to think that UIKit is slowly becoming a thing of the past. But is it? I’ve noticed that even when we’re not directly working with UIKit, its influence lingers in our approach to building views. It is the mindset that proves the most difficult to change. Over the past few months, I’ve been tracking SwiftUI anti-patterns that seem to originate from UIKit. Now, I want to share what I found with you to help you avoid them. I don’t want to argue in favour oft clean SwiftUI for the sake of purity. This talk is about embracing the framework fully and working with it, rather then against it. It’s about adopting the right patterns to achieve first-class accessibility, smooth animations, and optimal performance.

    Lucy Galik

    Lucy Galik is a Software Engineer at Monzo working on the UI frameworks. Previously she worked at Delli and Farmdrop where she built delightful apps focusing on first class user experience. She likes learning new technologies, solving problems and helping others. Outside of work, Lucy enjoys cold water swimming. She is also an avid operagoer.

    

    Lucy Galik

  • 17:00Drinks

    Drinks

    At the end of the conference all attendees, speakers, and staff can have a drink together.

    Upstairs on the 5th, in the NEMO Science Museum Restaurant.

  • 18:00Dinner

    Walking Dinner

    Food, people, and conversations.

    What’s this about then?

    Get to know each other and all speakers a bit more at this walking dinner. Dinner is on us!

    Join us!

  • 20:00Logistics

    End

    End of day 1

• 2025-11-13 - Conference Day 2

  • 08:30Logistics

    Doors open

    Get into the venue. Mingle and get to know each other.

  • 09:00Welcome

    Welcome to Do iOS Day 2

    We’re happy to have you as an attendee, an amazing line-up of speakers awaits. Before getting started, Jeroen takes you through the practical details of the conference.

    Baggage storage available in a locked room, right next to the auditorium.

    

    Jeroen Leenarts

  • 09:15Talk

    Roasting your app's accessibility

    So you want to make your app accessible? Do you have an idea where to start? What your low hanging fruit is? Why don’t I just take a look at your app and tell you — and make meaningful improvements that give you an idea how important it is to get this right? Then show it at work and off you go.

    Having been in the accessibility field for a number of years now, it’s great to see what seems like an improved appreciation and interest in the topic, not just because of legal requirements like the European Accessibility Act.

    Yet, where do you start with this topic if you don’t know what you don’t know?

    There’s still a gap when it comes to education on accessibility.

    So let me show you where your app falls short, how to fix things (spoiler: it’s often straightforward), and how and why users of various assistive technologies rely on you to make your app accessible.

    Then go show off the improvements and their impact at work and you’re off to the races.

    Bas Broek

    Bas is an iOS and macOS developer with a passion for testability, accessibility and user-centric apps. He cares about communication and collaboration.

    Coffee is nice. I like watches.

    

    Bas Broek

  • 10:00Break

    Coffee

    Time for a break.

  • 10:45Talk

    Crafting SwiftUI components in the same way Apple does!

    What distinguishes a good UI component from a great one? The DX — specifically, how intuitive and flexible its public API is. Discover powerful techniques to pass data and events in and out, and allow high customizability while building more reusable and friendly components just like Apple does!

    Building views on Apple platforms has never been easier thanks to SwiftUI. But building reusable components that are both flexible and easy to use remains a big challenge.

    In this talk, we’ll explore a range of techniques for crafting powerful components, that pack in rich features while staying highly customizable — both in terms of design and developer ergonomics at the call site.

    We’ll dive deep into strategies for data and event handling, including:

    • @Binding for dynamic state sharing
    • Callbacks for event communication
    • View Modifiers for configuration
    • Protocol for customization

    Whether you’re working on a design system or crafting open-source components, this session will give you the tools to create incredible, capable, and developer-friendly components — the SwiftUI way.

    Thomas Durand

    II like to go by the name of Dean, because it’s way easier to pronounce in any language, including English than “Thomas Durand”

    Backend architect and security engineer by day, I’m also an iOS Indie Dev by night! On my free time, I’m building in public independent iOS app like SharePal and Padlok. I also share my discoveries while building on my blog, mostly about Swift, SwiftUI and software security.

    After talking at various events, I’d like to continue growing in the community, sharing everything I learn along my journey of building indie apps, or reliable and scalable back-ends.

    

    Thomas Durand

  • 11:30Talk

    Engineering Accessibility: Practical, Maintainable, Testable

    Accessibility fixes are easy; Making them fit cleanly into a real codebase is the hard part. This talk shows you how to meet accessibility requirements with tools, automation, and solid engineering practices that keep your code clean and maintainable.

    Accessibility seems straightforward until you start integrating it into a complex production codebase. The individual fixes may be “easy,” but adding these fixes in a way that maintains your code quality standards is where it gets tricky. In this talk, you’ll learn how to meet accessibility requirements while keeping your codebase clean, maintainable, and testable. We’ll cover tools for auditing and testing, patterns for automation, and walk through cookbook-style solutions to common accessibility problems you’re likely to face. After this talk, you’ll feel confident tackling accessibility fixes with solid, sustainable engineering.

    Key Takeaways: - How to leverage existing tools and automation to save time and reduce regressions - How to structure your code so it’s clean, maintainable, and testable - Practical solutions to the most common accessibility problems in iOS development

    Robin Kanatzar

    Robin Kanatzar is an iOS engineer who loves building mobile apps that everyone can use. She writes a newsletter about mobile accessibility and is always on the hunt for smart, practical ways to help developers bring accessibility into their code. Robin’s on a mission to make accessibility second nature in iOS development, and she looks forward to the day when every app on the store is accessible.

    

    Robin Kanatzar

  • 12:15Break

    Lunch

    Time for lunch

  • 13:15Talk

    Who Let the App Intents Out? 🐾

    Who says you need to open an app to use it? With App Intents, I tracked walks with my puppy 🐶 without taking out my iPhone. Learn how to extend your app beyond the UI using Siri, Shortcuts, Spotlight, and widgets—hands-free, in pure Swift.

    This talk is about an app that (almost) does nothing on screen, but everything through the system. It logs dog walks without ever opening the app, thanks to App Intents. Actions can be triggered via Siri, automations in Shortcuts, Spotlight, or widgets.

    I’ll start by sharing the motivation behind the app: I wanted to log walks with my puppy without ever pulling out my iPhone, to stay focused and present. From there, I’ll walk you through how I built a fully working, background-driven experience using App Intents: - How to define and register AppIntent - How to expose your app’s actions to Siri, Shortcuts, and widgets - How to pass parameters using AppEnum and AppEntity

    The goal is to show how a simple Swift-based integration can unlock powerful, system-level features, without needing to touch your UI.

    This talk is hands-on, pragmatic, and filled with examples you can apply in your own app. All the good stuff: Siri, Shortcuts, Widgets… and fully dog-approved 🐾

    Claire Sivadier

    Claire Sivadier is a freelance iOS developer who was originally destined to be a dog breeder, but discovered her passion for tech after an unexpected career change. Since then, she’s worked on meaningful projects like promoting healthy habits at Kiplin and enhancing the listening experience at Deezer. She’s also a co-organizer of Mobilis in Mobile, and CocoaHeads Nantes.

    

    Claire Sivadier

  • 14:00Talk

    Swift 6.2 is here — It's time to migrate to Strict Concurrency

    After migrating 20+ packages for RocketSim, Antoine is back to share his experiences of adopting Strict Concurrency.

    He’ll share the impact of Swift 6.2 and how approachable concurrency could be the missing piece you’ve needed.

    Antoine van der Lee

    Antoine is passionate about contributing to the Swift community. You might know him from his weekly blog posts on his personal blog, SwiftLee, his newsletter, SwiftLee Weekly, or RocketSim, an Xcode Simulator-Enhancing App. He particularly enjoys speaking on best practices for structuring code architecture in a way that creates sustainability, new Swift features, and how iOS developers can be more successful in their work.

    Before going Indie in 2024, he led the team at WeTransfer as a Staff iOS Engineer and developed several large-scale apps since 2009 (iOS 4!). His most recent work resulted in two brand new courses: From Side Project to Going Indie at going-indie.com and a course focused on Swift 6 and Concurrency at www.swiftconcurrencycourse.com.

    

    Antoine van der Lee

  • 14:45Break

    Coffee

    Time for a break.

  • 15:30Talk

    Tuning your app using Xcode's instruments

    Updated for Xcode 26, this live coding session dives into real-world debugging with Instruments. Learn how to track down memory leaks, CPU spikes, and UI issues using practical tools and workflows I have mastered after years of optimizing app performance at scale.

    Have you ever spent hours chasing down frustrating performance issues like bloated app storage or laggy UIs? Or maybe you’ve noticed something off in your app’s performance but weren’t quite sure how to track down the root cause?

    You’re not alone. After years of debugging apps at scale, I’ve built a toolkit of techniques, tools, and processes to help you quickly identify and fix those elusive performance problems like a pro.

    In this session, I’ll take you on a deep dive into analyzing real-world performance, memory, and UI issues using Xcode’s Instruments. Drawing from my own experience working with apps at scale, I’ll walk you through the most common challenges developers face—from unexpected memory spikes to sluggish UI elements. You’ll see how to approach these problems in practice, using real scenarios I’ve encountered in production apps.

    We’ll explore several powerful Instruments templates, including Time Profiler for spotting CPU bottlenecks and analyzing thread usage, Zombies for catching memory leaks, and the Concurrency instrument for visualizing task execution and actor behavior. I’ll also highlight the often-overlooked SwiftUI instrument—a potential game-changer for anyone working with SwiftUI, especially in Xcode 26.

    By the end of this session, you’ll walk away with a clear process and a practical toolkit for investigating and resolving a wide range of app performance issues—ready to put to work in your own projects.

    Pol Piella Abadia

    I’m an iOS Developer and Content Creator from Spain, and the maker of popular apps such as Helm for App Store Connect, NowPlaying, QReate, and Fosi.

    I also curate the iOS CI Newsletter, regularly speak at conferences around the world and work as a Senior Software Engineer at RevenueCat.

    

    Pol Piella Abadia

  • 16:15Talk

    The Evolution of iOS Development & Swift Language

    Dive into the evolution of iOS development—from Objective-C to Swift and now SwiftUI. See how Apple’s tools have transformed, how developers have adapted, and how you can grow in a fast-changing ecosystem.

    This talk explores the evolution of iOS development—from Objective-C and UIKit to the power of Swift and the declarative world of SwiftUI. We’ll look at how Apple’s tools and frameworks have changed, why they did, and how developers have successfully adapted along the way. You’ll gain insight into how to grow with the platform, adopt modern best practices, and stay future-ready in a constantly evolving environment. Whether you’re new or experienced, this session will help you navigate and thrive in the ever-changing world of iOS development.

    Burcu K. Kutluay

    Burcu is a Public Speaker, Freelance Engineering Mentor, and Senior iOS Mobile Engineer with 10+ years of experience in mobile product development across finance, e-commerce, travel, and startups. Passionate about  platforms, leadership, and product development, she helps engineers grow through mentorship, best practices, and technical excellence. She speaks at top tech conferences and writes on Medium, sharing insights on mobile development, engineering leadership, and team dynamics. Burcu loves simplifying complex problems. Outside of work, she enjoys music and playing guitar.

    

    Burcu Kutluay

  • 17:00Logistics

    End

    End of day 2