I just released WhaleDeck 3, which makes Docker management and monitoring a joy. In case you aren’t familiar, Docker enables you to run apps and services in isolated containers on your computer or server. #iOSDev #indiedev #docker

Today opened the submission for this year's #SwiftStudentChallenge for three weeks.As a two-time winner, I can highly recommend it and got to know a few nice people along the way. Here is the most important stuff you need (to know) from start to finish ⬇️

If you want to learn more about the new agentic coding features in Xcode 26.3, here’s a short tech talk by Apple: developer.apple.com/videos/play/... #iOSDev #SwiftUI

🚨 Wake up! Eleven new examples, all about sheets, just dropped on Explore SwiftUI. Screenshots for different designs and devices are available to cover the edge cases. Start exploring here: exploreswiftui.com/library/sheet #iOSDev #SwiftUI

Just a quick word of warning if you’re developing something for this year’s #SwiftStudentChallenge: don’t import assets via Xcode if you expect your app to run in the Playground/on a real iPad. They use different asset formats. I learned this the hard way last year!

👀

Hot startup idea: An app that automatically updates your IAP pricing based on the latest tariffs with a single click.

Not sure whether I should laugh or cry, but a simple timeframe description caused random hitches and slowed the UI down. Instruments helped me track it down, and caching the description fixes it for now. Amazing how much impact a "simple" text can have… #iOSDev #SwiftUI

My new app is coming together nicely. It's currently in closed beta and will hopefully be released to the public this month, or at the latest, in early February. There's already so much to explore, and the list of additional feature ideas is still growing. #iOSDev #SwiftUI

A brief service announcement: Today is the perfect day to install the important security updates you’ve been postponing all year on all your servers. Yes, even that old, crappy Raspberry Pi you shoved under the staircase and hoped everyone would forget about. Happy New Year! 🎉

Is there any way to make a native #SwiftUI macOS settings window resizable, like the Xcode preferences window? No matter what modifiers I try, I can't get it to work.

I tried something fun today: printing one of my app’s icon with an NFC tag embedded inside. For this, I designed a coin-shaped chamber where I inserted the tag during a pause in the print. Now, holding the icon near your iPhone automatically opens the app’s page. #iOSDev

Did you know iOS 26 introduces a new button initializer that only takes a role and an action as parameters? Based on the role, a fully localized label with a custom icon is generated. This also provides a native way to get the sheet close and confirm buttons. #iOSDev #SwiftUI

I've now updated all iOS screenshots on exploreswiftui.com with their Liquid Glass variants. Additionally, the code is now formatted much more nicely, and the screenshot variant is now synced with the browser’s dark mode setting. #iOSDev #SwiftUI

Exploreswiftui.com will soon see a big update with dedicated support for Liquid Glass. I’ll update screenshots of existing elements while keeping the flat versions. This also enables exploring the new language and comparing it with the old flat design. #iOSDev #SwiftUI

Every time I try to create fancy App Store screenshots for a new app, I’m reminded how bad a designer I am 😵‍💫

Here’s what I’ve been cooking lately 🧑‍🍳 more soon! #iOSDev #SwiftUI

This still haunts me 😭 The modifier doesn’t work on Tahoe, and even my workaround is broken there. Is there any other way on macOS to make a list section full-width? #iOSDev #SwiftUI

I’ve been experimenting with mesh gradients lately as colorful backgrounds that dynamically adapt to the content that’s being shown. #iOSDev #SwiftUI

I've finally managed to fully rebuild the Liquid Glass icon of WhaleDeck in 3D 🥳 Let's see how it actually looks when it's finally printed. #iOSDev

You’re an indie app developer offering special deals for Black Friday and Cyber Monday? You can submit your deals to these lists 👇 #iOSDev #SwiftUI #buildinpublic

Here’s a fun weekend project: printing my app icons in 3D. I’ll start with DriveDex because it’s the easiest to model.

I watched this session for the first time a week ago, and I now think it’s an absolute must-watch. It covers the most common causes of hangs and explains very clearly what a fix can look like. Take a look: developer.apple.com/videos/play/... #iOSDev #SwiftUI

I’m confirmed for the Apple Developer event on December 1st in Berlin 🎉 Anyone else here attending?

Interesting. Simply displaying this table seems to be extremely expensive on the main actor and it prevents the chart from updating immediately, even though fetching the data only takes a few milliseconds. Is Table really that costly to render or am I missing something? #iOSDev #SwiftUI

Here we go again: the Swift Student Challenge 2026 has been announced. Not sure if I’ll be able to enter one last time, but I definitely recommend doing so! www.apple.com/newsroom/202... #iOSDev #SwiftUI #SwiftStudentChallenge

Ugh. What a tough decision: supporting cross-device sync via CloudKit requires all primary keys to be UUIDs. My tests showed inserts up to 60% slower and queries around 30% slower with a million rows. But not having the option for sync would suck too. #iOSDev

Less than 6 months ago I built something I always wished existed – a visual way to explore SwiftUI elements and modifiers. Today, exploreswiftui.com just crossed 10k visitors 🎉 More free content coming soon, so do not forget to bookmark it :) #SwiftUI #iOSDev

Querying one million rows with 12 properties each fully locally using SQLite. I think this is pretty decent performance, especially considering that such a large dataset is only expected for a very small user base. The UI is powered by SwiftUI and Swift Charts. #iOSDev #SwiftUI

What a rough journey. I originally started this project with SwiftData, but reading got painfully slow with just a few 100k entries. Switching to Core Data solved this, but insert performance was still similar to SwiftData. I am now using SQLiteData and it's great. #iOSDev

With Liquid Glass, optimizing your widgets for different rendering modes is something worth looking into. Large content can appear odd if not handled correctly. @Environment(\.widgetRenderingMode) lets you create custom designs for each mode. #iOSDev #SwiftUI

I played a few minutes with the Sora 2 app and generated some Xcode AI slop. What kind of dystopian world are we heading toward if we spend our days consuming this junk?

Just a quick TIL: If you're wondering why your XCUITest isn't showing up in the simulator, either enable "Show Parallel Testing Devices" to reveal the hidden simulator, or disable parallelization in your test plan to use the main simulator. #iOSDev #SwiftUI

There is now an RSS feed available for exploreswiftui.com to easily track new content. It should be automatically detected, but is also manually available at /feed. Have fun! #SwiftUI #iOSDev

Why do people in 2025 still fill out contact forms without real contact information? What do they expect when they enter nonsense into the fields? Sure, the form works, but I can’t tell ya 🫨🫩

I just released WhaleDeck 3, which makes Docker management and monitoring a joy. In case you aren’t familiar, Docker enables you to run apps and services in isolated containers on your computer or server. #iOSDev #indiedev #docker

TIL the hard way that the Keychain on macOS behaves quite differently when saving credentials locally compared to iOS/Mac Catalyst 🫨 Thanks to this random dude who wrote the article, it saved my Sunday. medium.com/@bhojwanirav... #iOSDev

May today be the day I finally finish the iOS 26 update for WhaleDeck. I’ve already spent almost 140 hours on it and the todo list keeps growing. At least the tasks are getting smaller 🥳 #iOSDev #Docker

Running tasks is now smoother in WhaleDeck. The full-screen overlay is gone, replaced by a small indicator that disappears after a few seconds or stays if something goes wrong. #iOSDev #SwiftUI #Docker

Is there a way in SwiftUI to open a new window not in fullscreen on iPadOS? By default, when the main app is in fullscreen, openWindow also opens the new window in fullscreen. However, I’d like it to open as an overlay, similar to how Mail and Notes handle it. #iOSDev #SwiftUI

Just a quick service reminder: Don’t forget to add your OpenIntents to your app’s target. Otherwise, you’ll look just as stupid as I did debugging why the intent wouldn’t work in the Shortcuts app. #iOSDev

Just submitted the first three updates for iOS 26. Let's see how long the review takes this time. #iOSDev

The Xcode GM is out 🎉 Time to upload those iOS 26 builds for next Monday’s release 🚢 #iOSDev

The new Apple Watch is a big W with Hypertension detection and a better battery life

Am I missing something, or are full-screen screenshots in the App Store broken on both iOS 18 and 26? Just look at how squashed the 18:32 looks, and those logs seem really off. It’s even worse on 26 than on 18. #iOSDev #SwiftUI

I'm still working hard on this update, but I’m already very proud of it. Much of the functionality is now deeply and naturally integrated into toolbars, context menus, swipe actions and shortcuts, allowing users to access it anytime and anywhere. #iOSDev #SwiftUI #Docker

I've spent the past three weeks completely redesigning WhaleDeck for iPhone, iPad, and Mac. It was an incredible amount of work, but I think it's now much easier to use, especially in a professional context. Still lots more work left to do before the release. #SwiftUI #iOSDev

What's your go-to way to group larger info on macOS with #SwiftUI? On iOS/iPadOS I love how List and Sections look, but on macOS they're hard to tell apart. Any better ideas than ditching List and overusing GroupBox / RoundedRectangle?

In hindsight, iOS 17 was, in my opinion, a huge leap forward. I’ve never looked forward to setting a release as my deployment target so much. SwiftData and the Observation framework are great to work with, and the new modifiers bring major QoL improvements for developers. #iOSDev #SwiftUI

After yesterday’s example of the new button roles, I want to go a bit in depth as I mixed up a few things. With iOS 26, there are now four button roles: close and confirm (26+), destructive and cancel (15+). #iOSDev #SwiftUI