John Sundell and Gui Rambo
Stacktrace
A podcast about life and technology from two developers’ perspectives. With John Sundell and Gui Rambo.
Author
John Sundell and Gui Rambo
Category
Podcast website
Latest episode
Jun 22, 2026
Where to listen?
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Episodes
108: “The future could be next week”, the November 2020 Apple Keynote Poker special 04.11.2020 1:08:38
It’s time for John and Rambo to place their bets on what Apple might announce at their upcoming “One More Thing” event. Will we see the first Apple Silicon-powered Macs, and if so, which ones, and what features will they have? Also, artisanal, hand-crafted JSON from Brazil, and computer-generated CSS from Poland.
107: “Context is key” 28.10.2020 1:30:39
The story and implementation behind Swift by Sundell Discover, how and why AirBuddy 2 will have an onboarding process, thoughts and comments on the new Apple Silicon-powered iMac rumors, home screen customization hacks, and a deep dive into balancing code-level details with shipping great products.
106: “Do you buy your HomePods in bulk?” 21.10.2020 58:23
The success of the AirBuddy 2 pre-orders is immediately followed by a classic Rambo shopping spree, John continues to explore Swift’s function builders feature, and the two discuss the initial reviews of the iPhone 12 and 12 Pro, the new HomePod home theatre mode, and how their names are actually pronounced.
105: “An old man yelling at an iCloud”, the October 2020 Apple event review 14.10.2020 1:25:58
On this extra long episode of Stacktrace, John and Rambo discuss all of the exciting new announcements from Apple’s October 2020 event, including the new iPhones, the new HomePod Mini, and more. Also, John is building a major new feature for his website and Rambo launches the pre-orders for AirBuddy 2.
104: “Did it smell like an Apple product?” 07.10.2020 1:02:30
Building and using iOS widgets, the community’s adoption of SwiftUI, an update on whether game streaming services are now viable on iOS, multiple ways of using view models, and Swift’s new Windows compatibility.
103: “Widgets are data” 30.09.2020 1:04:04
Building and using iOS widgets, the community’s adoption of SwiftUI, an update on whether game streaming services are now viable on iOS, multiple ways of using view models, and Swift’s new Windows compatibility.
102: “It compiles — ship it!” 23.09.2020 54:32
Building responsive app UIs, the launch of iOS 14, and thoughts on the Apple One bundle and some of its international pricing. Also, the return of both #askstacktrace and Stacktrace Arcade, as well as how using iCloud might affect the transferability of an app.
101: “The iPad Prosumer” 16.09.2020 1:18:04
It’s Apple event analysis time! John and Rambo discuss all of the major announcements from Apple’s “Time Flies” event — including the Apple Watch Series 6 and SE, the new iPads, and of course, the surprise release of iOS 14.
100: “It was all planned” 09.09.2020 1:10:22
On this special 100th episode of the show, John and Rambo reflect on their personal milestones since episode one, and play another round of Apple Keynote Poker in preparation for next week’s Apple event.
99: “Untangle some spaghetti” 02.09.2020 1:07:46
Behind the scenes of building an App Clip, progressive disclosure when designing UIs, Rambo's struggles with App Translocation on macOS, and speculation around what Apple might have in store for us this fall.
98: “A chip volcano” 26.08.2020 1:01:38
A deep dive into syncing systems and what goes into writing code for synchronizing user data using tools like CloudKit, a look under the hood of what AirPower could’ve been, and your regular weekly updates from John and Rambo.
97: “You can’t be Springboard” 19.08.2020 1:12:44
Analysis of the ongoing battle between Apple and Epic Games from a technical perspective, the benefit of writing cross-platform Swift code, logging and debugging strategies, and how Rambo merged two apps into one.
96: “The Pandora’s Box of software” 12.08.2020 1:03:47
Combining SwiftUI with other rendering technologies, Rambo’s preparations for the launch of the AirBuddy 2.0 Beta, and lots of thoughts on the recent App Store controversy involving Microsoft’s xCloud game streaming service. Also, custom Swift keywords, yay or nay?
95: “We’re not lawyers” 05.08.2020 1:15:08
What differentiates server-side and client-side development, Tim Cook’s testimony in front of the US Congress, the new iMac, Rambo’s secret new project, and more on John’s not-so-secret use of SwiftUI to build games.
94: “The great app idea incubator” 29.07.2020 1:04:41
Is FaceID coming to the Mac, what could a Swift version of async/await end up looking like, and what makes SwiftUI a nice fit for game UI development?
93: “Life is not paper” 22.07.2020 57:29
Rambo shuts down two of his projects and battles Dark Mode on macOS, John re-evaluates his goals and work priorities, and the two discuss the big Twitter hack, engineering management, and whether Apple has changed their strategy around when to ship new features.
92: “App Store review lawyer” 15.07.2020 1:08:19
After an accidental deep dive into SwiftUI, John and Rambo discuss the recent issues with Facebook’s iOS SDK and whether Apple should force developers to adopt more platform features. Then, this episode’s actual deep dive, into backend-driven UIs.
91: “Just check the checkbox” 08.07.2020 1:08:31
After a bit of speculation as to whether or not Apple will ship this year’s iPhone without a charger, John and Rambo go on a deep dive into SwiftUI state management, and discuss various approaches for sharing code between an app and an extension.
90: “Adaptive lightning” 02.07.2020 1:07:09
The macOS Big Sur redesign doesn’t mean the end of the world, right? Or does it? John and Rambo discuss the reveal of Apple Silicon, macOS 11, iOS apps coming to the Mac, and much more — all during a recording session stretched out over two days in the middle of a Brazilian lightning storm.
89: “Did you wash your hands?”, a WWDC 2020 special 24.06.2020 1:36:54
On this WWDC20 special, John and Rambo start diving into the main announcements from Apple’s conference, focusing on iOS, App Clips, Widgets, Siri, Maps, watchOS, AirPods and iPadOS.
WWDC by Sundell & Friends #1: Keynote and Platforms State of the Union first impressions 17.06.2020 23:00
John and Gui Rambo share their first impressions of Apple’s WWDC20 opening keynote, as well as the Platforms State of the Union session. This is the first episode of the WWDC by Sundell & Friends podcast. Did Apple’s first ever online keynote live up to our expectations, which of the announcements were the most exciting, and what technologies are we looking forward to dive deeper into during the w...
88: “WWDC20 Keynote Poker”, with special guests Ellen Shapiro and Kaya Thomas 17.06.2020 1:17:25
On this special episode of the show, John and Rambo are joined by Ellen Shapiro and Kaya Thomas for the grand WWDC20 Keynote Poker game. Bets, speculations, and discussions around what Apple might release next week at the 2020 edition of WWDC.
87: “An ARM and a leg” 10.06.2020 1:17:06
A deep dive into the iOS background operations model and how it could potentially be improved, rumors about both ARM Macs and a new iMac design being unveiled at WWDC20, and a discussion around designing custom systems for apps. That, and your regular updates from both John and Rambo, on this week’s episode of Stacktrace.
86: “Into the void of the internet” 03.06.2020 1:02:43
Preparations for WWDC, a look at the first COVID-19 exposure notification apps powered by Apple and Google’s system, and a deep dive into the world of Reactive Programming through frameworks like RxSwift and Combine. Also, will cross-platform technologies like Flutter ever take over native iOS development?
85: “Magnetic mumbo jumbo” 27.05.2020 1:17:57
What could an iPhone without any ports look like, and is it likely that Apple would ever adopt USB-C for the iPhone? Also, Mac development, using multiple programming languages, sharing utilities between projects, and much more.
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