Danny Bolella (aka Captain SwiftUI)
@dbolella.bsky.social
Captain SwiftUI
Lead Software Engineer - iOS
iOS / Android / Flutter / Full Stack Developer
Father, Husband, Dude
Thoughts are my own
Lead Software Engineer - iOS
iOS / Android / Flutter / Full Stack Developer
Father, Husband, Dude
Thoughts are my own
Reposted by Danny Bolella (aka Captain SwiftUI)
New Swift News out now on my YouTube channel.
- What's new in Swift 6.2
- New era of iOS Dev
- Dark side of iOS Dev
- Foundation Model ideas
- Tik Tok indie marketing origin story???
Video - youtu.be/KIbPHB6FIlo
- What's new in Swift 6.2
- New era of iOS Dev
- Dark side of iOS Dev
- Foundation Model ideas
- Tik Tok indie marketing origin story???
Video - youtu.be/KIbPHB6FIlo
Swift 6.2, New Era of Swift, Foundation Models, Dark Side of iOS Dev & More.
YouTube video by Sean Allen
youtu.be
October 8, 2025 at 4:10 PM
New Swift News out now on my YouTube channel.
- What's new in Swift 6.2
- New era of iOS Dev
- Dark side of iOS Dev
- Foundation Model ideas
- Tik Tok indie marketing origin story???
Video - youtu.be/KIbPHB6FIlo
- What's new in Swift 6.2
- New era of iOS Dev
- Dark side of iOS Dev
- Foundation Model ideas
- Tik Tok indie marketing origin story???
Video - youtu.be/KIbPHB6FIlo
Ahoy there ⚓️ this is your Captain speaking…
Liquid Glass just introduced three new design principles — Hierarchy, Harmony, and Consistency. 🌊
These are the Northern Stars for Apple’s new design era.
Read here → captainswiftui.substack.com/p/the-northe...
#SwiftUI #LiquidGlass #iOS26
These are the Northern Stars for Apple’s new design era.
Read here → captainswiftui.substack.com/p/the-northe...
#SwiftUI #LiquidGlass #iOS26
The Northern Stars of Liquid Glass
An overview of the new HIG principles of Hierarchy, Harmony, and Consistency
captainswiftui.substack.com
September 17, 2025 at 10:36 AM
Ahoy there ⚓️ this is your Captain speaking…
Liquid Glass just introduced three new design principles — Hierarchy, Harmony, and Consistency. 🌊
These are the Northern Stars for Apple’s new design era.
Read here → captainswiftui.substack.com/p/the-northe...
#SwiftUI #LiquidGlass #iOS26
These are the Northern Stars for Apple’s new design era.
Read here → captainswiftui.substack.com/p/the-northe...
#SwiftUI #LiquidGlass #iOS26
As Apple announces the new #iPhone17 and other “awe dropping” hardware updates, they’re also officially launching the new design system, #LiquidGlass. As developers, it’s all part of The Great Shift in how we approach Apple development.
captainswiftui.substack.com/p/the-great-...
captainswiftui.substack.com/p/the-great-...
The Great Shift in Apple Development
A new, sweeping era has begun. Here are the signs...
captainswiftui.substack.com
September 8, 2025 at 12:07 PM
As Apple announces the new #iPhone17 and other “awe dropping” hardware updates, they’re also officially launching the new design system, #LiquidGlass. As developers, it’s all part of The Great Shift in how we approach Apple development.
captainswiftui.substack.com/p/the-great-...
captainswiftui.substack.com/p/the-great-...
Ahoy there ⚓️ this is your Captain speaking…
This summer hasn’t just been busy — it’s marked a real shift in how we code and design on Apple platforms.
I’m calling it The Great Shift.
captainswiftui.substack.com/p/the-great-...
#ios #ipados #macos #swiftui #swift #iphone #liquidglass
This summer hasn’t just been busy — it’s marked a real shift in how we code and design on Apple platforms.
I’m calling it The Great Shift.
captainswiftui.substack.com/p/the-great-...
#ios #ipados #macos #swiftui #swift #iphone #liquidglass
The Great Shift in Apple Development
A new, sweeping era has begun. Here are the signs...
captainswiftui.substack.com
September 2, 2025 at 6:25 PM
Ahoy there ⚓️ this is your Captain speaking…
This summer hasn’t just been busy — it’s marked a real shift in how we code and design on Apple platforms.
I’m calling it The Great Shift.
captainswiftui.substack.com/p/the-great-...
#ios #ipados #macos #swiftui #swift #iphone #liquidglass
This summer hasn’t just been busy — it’s marked a real shift in how we code and design on Apple platforms.
I’m calling it The Great Shift.
captainswiftui.substack.com/p/the-great-...
#ios #ipados #macos #swiftui #swift #iphone #liquidglass
Question for my network: Has anyone been to one of the recent Meet with #Apple Workshops around the new design system?
- What's it like? (format, sessions, etc)
- Is it required to go all 3 days?
- What was the biggest take-away for you and your team?
developer.apple.com/events/view/...
- What's it like? (format, sessions, etc)
- Is it required to go all 3 days?
- What was the biggest take-away for you and your team?
developer.apple.com/events/view/...
Meet with Apple - Apple Developer
Join us around the world for a variety of sessions, labs, and workshops — tailored for you.
developer.apple.com
July 21, 2025 at 1:59 PM
Question for my network: Has anyone been to one of the recent Meet with #Apple Workshops around the new design system?
- What's it like? (format, sessions, etc)
- Is it required to go all 3 days?
- What was the biggest take-away for you and your team?
developer.apple.com/events/view/...
- What's it like? (format, sessions, etc)
- Is it required to go all 3 days?
- What was the biggest take-away for you and your team?
developer.apple.com/events/view/...
iPadOS windowing is here — and it’s not just about resizing.
🧱 It brings a new micro-state
📏 It can break layouts you haven’t tested
🪟 It demands smarter SwiftUI structure
Check out my initial thoughts and findings: captainswiftui.substack.com/p/windowing-... #SwiftUI #iPadOS #WWDC25
Check out my initial thoughts and findings: captainswiftui.substack.com/p/windowing-... #SwiftUI #iPadOS #WWDC25
Windowing on iPadOS (Or How I Learned to Love The Backlog Bomb)
The New Windowing System brings iPadOS even closer to macOS, but opens up a world of new development considerations
captainswiftui.substack.com
July 15, 2025 at 11:24 AM
iPadOS windowing is here — and it’s not just about resizing.
🧱 It brings a new micro-state
📏 It can break layouts you haven’t tested
🪟 It demands smarter SwiftUI structure
Check out my initial thoughts and findings: captainswiftui.substack.com/p/windowing-... #SwiftUI #iPadOS #WWDC25
Check out my initial thoughts and findings: captainswiftui.substack.com/p/windowing-... #SwiftUI #iPadOS #WWDC25
Spotted this new search pattern in the iOS26 wild — News and Health both use Liquid Glass-style multi-tabbed search.
It’s subtle, but it changes how we structure views, surface context, and think about when users actually need to search.
🧭 I unpacked it here → open.substack.com/pub/captains...
It’s subtle, but it changes how we structure views, surface context, and think about when users actually need to search.
🧭 I unpacked it here → open.substack.com/pub/captains...
Finding Deeper Meaning in Liquid Glass Search
How Apple has aligned search with where they believe the future of application design is going
open.substack.com
July 7, 2025 at 11:38 AM
Spotted this new search pattern in the iOS26 wild — News and Health both use Liquid Glass-style multi-tabbed search.
It’s subtle, but it changes how we structure views, surface context, and think about when users actually need to search.
🧭 I unpacked it here → open.substack.com/pub/captains...
It’s subtle, but it changes how we structure views, surface context, and think about when users actually need to search.
🧭 I unpacked it here → open.substack.com/pub/captains...
Liquid Glass is not just a material update. Apple 🍏 made it clear it’s a new design system, and we as devs need to jump on board 🚢
Watch as I share my thoughts on LG from the last Office Hours 🕰️: captainswiftui.substack.com/p/thoughts-o...
Watch as I share my thoughts on LG from the last Office Hours 🕰️: captainswiftui.substack.com/p/thoughts-o...
Thoughts on Liquid Glass as a New Design System
The Captain talks through the impact of the new design system during Office Hours
captainswiftui.substack.com
July 1, 2025 at 11:35 AM
Liquid Glass is not just a material update. Apple 🍏 made it clear it’s a new design system, and we as devs need to jump on board 🚢
Watch as I share my thoughts on LG from the last Office Hours 🕰️: captainswiftui.substack.com/p/thoughts-o...
Watch as I share my thoughts on LG from the last Office Hours 🕰️: captainswiftui.substack.com/p/thoughts-o...
Ahoy there ⚓️
Part 2 of my WWDC25 dev log is live ⚾️ 🧠 Foundation Models generated summaries 🧾 #Playground macro test 🗣️ AVSpeech speaks the scores 🤖 Xcode AI refactored code and added a feature
SwiftUI meets AI → open.substack.com/pub/captains... #WWDC25 #SwiftUI #FoundationModels #XcodeAI
Part 2 of my WWDC25 dev log is live ⚾️ 🧠 Foundation Models generated summaries 🧾 #Playground macro test 🗣️ AVSpeech speaks the scores 🤖 Xcode AI refactored code and added a feature
SwiftUI meets AI → open.substack.com/pub/captains... #WWDC25 #SwiftUI #FoundationModels #XcodeAI
Summarizing Scores with Foundation Models, #Playground, and Xcode AI
Apple's AI offerings for developers are knocking it out of the park, both on and off device
open.substack.com
June 25, 2025 at 11:13 AM
Ahoy there ⚓️
Part 2 of my WWDC25 dev log is live ⚾️ 🧠 Foundation Models generated summaries 🧾 #Playground macro test 🗣️ AVSpeech speaks the scores 🤖 Xcode AI refactored code and added a feature
SwiftUI meets AI → open.substack.com/pub/captains... #WWDC25 #SwiftUI #FoundationModels #XcodeAI
Part 2 of my WWDC25 dev log is live ⚾️ 🧠 Foundation Models generated summaries 🧾 #Playground macro test 🗣️ AVSpeech speaks the scores 🤖 Xcode AI refactored code and added a feature
SwiftUI meets AI → open.substack.com/pub/captains... #WWDC25 #SwiftUI #FoundationModels #XcodeAI
Join the Captain's Crew 🚢 (with a limited-time discount) and get access to this week's 🕰️ Office Hours: Post-WWDC Edition!
We'll be covering a whole bunch of topics 📋, sharing insights and thoughts, and trying some of the WWDC goodies live!
Subscribe here: captainswiftui.substack.com/e61c7588
We'll be covering a whole bunch of topics 📋, sharing insights and thoughts, and trying some of the WWDC goodies live!
Subscribe here: captainswiftui.substack.com/e61c7588
Subscribe to Captain SwiftUI
The Captain’s Blog on Swift, SwiftUI, and Apple Development. Click to read Captain SwiftUI, by Danny Bolella, a Substack publication with thousands of subscribers.
captainswiftui.substack.com
June 16, 2025 at 8:08 PM
Join the Captain's Crew 🚢 (with a limited-time discount) and get access to this week's 🕰️ Office Hours: Post-WWDC Edition!
We'll be covering a whole bunch of topics 📋, sharing insights and thoughts, and trying some of the WWDC goodies live!
Subscribe here: captainswiftui.substack.com/e61c7588
We'll be covering a whole bunch of topics 📋, sharing insights and thoughts, and trying some of the WWDC goodies live!
Subscribe here: captainswiftui.substack.com/e61c7588
“As scenes are vital for ensuring flexibility, adopting UIScene life cycle will soon be mandatory. In the next major release following iOS 26, UIScene life cycle will be required when building with the latest SDK.”
developer.apple.com/videos/play/...
developer.apple.com/videos/play/...
Make your UIKit app more flexible - WWDC25 - Videos - Apple Developer
Find out how your UIKit app can become more flexible on iPhone, iPad, Mac, and Apple Vision Pro by using scenes and container view...
developer.apple.com
June 13, 2025 at 11:28 AM
“As scenes are vital for ensuring flexibility, adopting UIScene life cycle will soon be mandatory. In the next major release following iOS 26, UIScene life cycle will be required when building with the latest SDK.”
developer.apple.com/videos/play/...
developer.apple.com/videos/play/...
Played with Foundation Models from this years #WWDC25 and I’m EXTREMELY impressed! One thing I’m curious about: how long has an average response been taking on your system?
I’ve been sitting somewhere around 11.2 seconds.
I’ve been sitting somewhere around 11.2 seconds.
June 12, 2025 at 10:35 AM
Played with Foundation Models from this years #WWDC25 and I’m EXTREMELY impressed! One thing I’m curious about: how long has an average response been taking on your system?
I’ve been sitting somewhere around 11.2 seconds.
I’ve been sitting somewhere around 11.2 seconds.
This #WWDC25 session is required viewing. If you want to write better, more performant #SwiftUI, working with Instruments is a huge guiding tool. And the enhancements this year are absolutely fantastic: developer.apple.com/videos/play/...
Optimize SwiftUI performance with Instruments - WWDC25 - Videos - Apple Developer
Discover the new SwiftUI instrument. We'll cover how SwiftUI updates views, how changes in your app's data affect those updates, and how...
developer.apple.com
June 10, 2025 at 11:24 PM
This #WWDC25 session is required viewing. If you want to write better, more performant #SwiftUI, working with Instruments is a huge guiding tool. And the enhancements this year are absolutely fantastic: developer.apple.com/videos/play/...
#WWDC25 dropped some heat — I broke down Day 1 in a fast read:
✅ What rumors came true
🧊 Apple’s Liquid Glass redesign
📐 Real SwiftUI updates
🧠 Foundation Models framework
Dev-first takes here → open.substack.com/pub/captains...
#SwiftUI #AI #AppleDeveloper
✅ What rumors came true
🧊 Apple’s Liquid Glass redesign
📐 Real SwiftUI updates
🧠 Foundation Models framework
Dev-first takes here → open.substack.com/pub/captains...
#SwiftUI #AI #AppleDeveloper
WWDC25 Keynote and PSOTU Impressions
The Captain's Initial Thoughts on What Apple Shared on Day 1
open.substack.com
June 10, 2025 at 11:20 AM
#WWDC25 dropped some heat — I broke down Day 1 in a fast read:
✅ What rumors came true
🧊 Apple’s Liquid Glass redesign
📐 Real SwiftUI updates
🧠 Foundation Models framework
Dev-first takes here → open.substack.com/pub/captains...
#SwiftUI #AI #AppleDeveloper
✅ What rumors came true
🧊 Apple’s Liquid Glass redesign
📐 Real SwiftUI updates
🧠 Foundation Models framework
Dev-first takes here → open.substack.com/pub/captains...
#SwiftUI #AI #AppleDeveloper
Day 1 of WWDC25 is in the books—and I’ve got first impressions from both the Keynote and the PSOTU. From the big reveals to the subtle signals about Apple’s direction, here’s what stood out (and what I’m keeping an eye on next).
📖 Read the full Day 1 recap: open.substack.com/pub/captains...
📖 Read the full Day 1 recap: open.substack.com/pub/captains...
WWDC25 Keynote and PSOTU Impressions
The Captain's Initial Thoughts on What Apple Shared on Day 1
open.substack.com
June 10, 2025 at 2:21 AM
Day 1 of WWDC25 is in the books—and I’ve got first impressions from both the Keynote and the PSOTU. From the big reveals to the subtle signals about Apple’s direction, here’s what stood out (and what I’m keeping an eye on next).
📖 Read the full Day 1 recap: open.substack.com/pub/captains...
📖 Read the full Day 1 recap: open.substack.com/pub/captains...
Craig's key points for Developers at the end of the #WWDC25 Keynote was to take note of:
1️⃣ Foundation Models Framework
2️⃣ App Intents
3️⃣ Visual Intelligence
Really looking forward to diving into these more at the Platforms State of the Union...
1️⃣ Foundation Models Framework
2️⃣ App Intents
3️⃣ Visual Intelligence
Really looking forward to diving into these more at the Platforms State of the Union...
June 9, 2025 at 6:43 PM
Craig's key points for Developers at the end of the #WWDC25 Keynote was to take note of:
1️⃣ Foundation Models Framework
2️⃣ App Intents
3️⃣ Visual Intelligence
Really looking forward to diving into these more at the Platforms State of the Union...
1️⃣ Foundation Models Framework
2️⃣ App Intents
3️⃣ Visual Intelligence
Really looking forward to diving into these more at the Platforms State of the Union...
Join us for a special Post-WWDC Office Hours 🕰️ on June 19 at 11 AM EDT!
The Captain and Crew will be gathering to unpack all the exciting announcements Apple 🍎 makes during WWDC.
Join with a new paid subscription—now available with a special WWDC promo:
👉 captainswiftui.substack.com/e61c7588
The Captain and Crew will be gathering to unpack all the exciting announcements Apple 🍎 makes during WWDC.
Join with a new paid subscription—now available with a special WWDC promo:
👉 captainswiftui.substack.com/e61c7588
June 4, 2025 at 12:00 PM
Join us for a special Post-WWDC Office Hours 🕰️ on June 19 at 11 AM EDT!
The Captain and Crew will be gathering to unpack all the exciting announcements Apple 🍎 makes during WWDC.
Join with a new paid subscription—now available with a special WWDC promo:
👉 captainswiftui.substack.com/e61c7588
The Captain and Crew will be gathering to unpack all the exciting announcements Apple 🍎 makes during WWDC.
Join with a new paid subscription—now available with a special WWDC promo:
👉 captainswiftui.substack.com/e61c7588
Less than a week to go until #WWDC25!!!
Get yourself even more hyped by checking out my pre-game analysis and predictions!
open.substack.com/pub/captains...
Get yourself even more hyped by checking out my pre-game analysis and predictions!
open.substack.com/pub/captains...
WWDC25 Pre-Game Analysis and Predictions
The Captain’s Take Heading Into The Happiest Week of an Apple Devs Year
open.substack.com
June 3, 2025 at 11:45 AM
Less than a week to go until #WWDC25!!!
Get yourself even more hyped by checking out my pre-game analysis and predictions!
open.substack.com/pub/captains...
Get yourself even more hyped by checking out my pre-game analysis and predictions!
open.substack.com/pub/captains...
Still wrestling with SwiftUI’s Form?
I broke down the tradeoffs of using Apple’s built-in container vs. building your own — plus what really happens when you try to style Form yourself.
Catch up here → open.substack.com/pub/captains...
#SwiftUI #iOSDev #UXDesign #CaptainSwiftUI
I broke down the tradeoffs of using Apple’s built-in container vs. building your own — plus what really happens when you try to style Form yourself.
Catch up here → open.substack.com/pub/captains...
#SwiftUI #iOSDev #UXDesign #CaptainSwiftUI
May 30, 2025 at 12:09 PM
Still wrestling with SwiftUI’s Form?
I broke down the tradeoffs of using Apple’s built-in container vs. building your own — plus what really happens when you try to style Form yourself.
Catch up here → open.substack.com/pub/captains...
#SwiftUI #iOSDev #UXDesign #CaptainSwiftUI
I broke down the tradeoffs of using Apple’s built-in container vs. building your own — plus what really happens when you try to style Form yourself.
Catch up here → open.substack.com/pub/captains...
#SwiftUI #iOSDev #UXDesign #CaptainSwiftUI
Well shiver me timbers… we did it! The crew has entered the 1000 club!🎉
🫡 Thank you EVERYONE who’s embarked on this adventure with me 🚢
Come join us on our next voyage! captainswiftui.substack.com
🫡 Thank you EVERYONE who’s embarked on this adventure with me 🚢
Come join us on our next voyage! captainswiftui.substack.com
May 28, 2025 at 7:33 PM
Well shiver me timbers… we did it! The crew has entered the 1000 club!🎉
🫡 Thank you EVERYONE who’s embarked on this adventure with me 🚢
Come join us on our next voyage! captainswiftui.substack.com
🫡 Thank you EVERYONE who’s embarked on this adventure with me 🚢
Come join us on our next voyage! captainswiftui.substack.com
May 28, 2025 at 6:12 PM
Ahoy there ⚓️ this is your Captain speaking…
Just dropped a new piece:
🧾 “Forming an Opinion on SwiftUI Forms”
Apple’s Form might save time — or box you in. I explored both sides.
open.substack.com/pub/captains...
#SwiftUI #iOSDev
Just dropped a new piece:
🧾 “Forming an Opinion on SwiftUI Forms”
Apple’s Form might save time — or box you in. I explored both sides.
open.substack.com/pub/captains...
#SwiftUI #iOSDev
Forming an Opinion on SwiftUI Forms
Filling in the Gaps on When to use SwiftUI's Form and When to Roll Your Own
open.substack.com
May 27, 2025 at 11:45 AM
Ahoy there ⚓️ this is your Captain speaking…
Just dropped a new piece:
🧾 “Forming an Opinion on SwiftUI Forms”
Apple’s Form might save time — or box you in. I explored both sides.
open.substack.com/pub/captains...
#SwiftUI #iOSDev
Just dropped a new piece:
🧾 “Forming an Opinion on SwiftUI Forms”
Apple’s Form might save time — or box you in. I explored both sides.
open.substack.com/pub/captains...
#SwiftUI #iOSDev
Ahoy there ⚓️ this is your Captain speaking…
I thought I was building a dynamic SwiftUI container with ForEach(subviews:).
What I got? A redraw tsunami.
What saved me? A secret, hidden old friend…
New post — “A Tale of Two Custom Container APIs”
open.substack.com/pub/captains...
#SwiftUI #iOSDev
I thought I was building a dynamic SwiftUI container with ForEach(subviews:).
What I got? A redraw tsunami.
What saved me? A secret, hidden old friend…
New post — “A Tale of Two Custom Container APIs”
open.substack.com/pub/captains...
#SwiftUI #iOSDev
A Tale of Two Custom Container APIs
How the Public Custom Container Solution Stacks Up Against It's Shadowy, Private Counterpart in SwiftUI
open.substack.com
May 13, 2025 at 10:44 PM
Ahoy there ⚓️ this is your Captain speaking…
I thought I was building a dynamic SwiftUI container with ForEach(subviews:).
What I got? A redraw tsunami.
What saved me? A secret, hidden old friend…
New post — “A Tale of Two Custom Container APIs”
open.substack.com/pub/captains...
#SwiftUI #iOSDev
I thought I was building a dynamic SwiftUI container with ForEach(subviews:).
What I got? A redraw tsunami.
What saved me? A secret, hidden old friend…
New post — “A Tale of Two Custom Container APIs”
open.substack.com/pub/captains...
#SwiftUI #iOSDev
Here’s a clip from this weeks Office Hours where I share my thoughts on App Delegate being deprecated!
To join the next Office Hours, start a paid subscription and join the crew!
open.substack.com/pub/captains...
To join the next Office Hours, start a paid subscription and join the crew!
open.substack.com/pub/captains...
Thoughts on App Delegate Deprecation
Listen to Captain SwiftUI’s thoughts on UIApplicationDelegate being deprecated and what that could mean for Apple’s strategy moving forward!
open.substack.com
May 9, 2025 at 1:40 PM
Here’s a clip from this weeks Office Hours where I share my thoughts on App Delegate being deprecated!
To join the next Office Hours, start a paid subscription and join the crew!
open.substack.com/pub/captains...
To join the next Office Hours, start a paid subscription and join the crew!
open.substack.com/pub/captains...