Kristoffer Johansson
@kristofferjohansson.com
Trying to lead a simple life. Enjoys solving problems using software. Makes a living building apps for Apple platforms. Working on @strengthy.app on the side.
📍 Lund, Sweden
🔗 https://kristofferjohansson.com
📍 Lund, Sweden
🔗 https://kristofferjohansson.com
Pinned
I’m Kristoffer 👋
I’m a software developer focused on building apps for Apple platforms.
Outside of work, I enjoy spending time with my family, running, reading, and playing the occasional video game.
I live outside of Gothenburg, Sweden with my partner, baby daughter, and our dog.
#introduction
I’m a software developer focused on building apps for Apple platforms.
Outside of work, I enjoy spending time with my family, running, reading, and playing the occasional video game.
I live outside of Gothenburg, Sweden with my partner, baby daughter, and our dog.
#introduction
Reposted by Kristoffer Johansson
December 13, 2025 at 4:59 AM
This is really confidence inducing
December 13, 2025 at 1:01 PM
This is really confidence inducing
Reposted by Kristoffer Johansson
OpenAI aren't talking about it yet, but it turns out they've adopted Anthropic's brilliant "skills" mechanism in a big way
Skills are now live in both ChatGPT and their Codex CLI tool, I wrote up some detailed notes on how they work so far here: simonwillison.net/2025/Dec/12/...
Skills are now live in both ChatGPT and their Codex CLI tool, I wrote up some detailed notes on how they work so far here: simonwillison.net/2025/Dec/12/...
OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI
One of the things that most excited me about Anthropic’s new Skills mechanism back in October is how easy it looked for other platforms to implement. A skill is just …
simonwillison.net
December 12, 2025 at 11:32 PM
OpenAI aren't talking about it yet, but it turns out they've adopted Anthropic's brilliant "skills" mechanism in a big way
Skills are now live in both ChatGPT and their Codex CLI tool, I wrote up some detailed notes on how they work so far here: simonwillison.net/2025/Dec/12/...
Skills are now live in both ChatGPT and their Codex CLI tool, I wrote up some detailed notes on how they work so far here: simonwillison.net/2025/Dec/12/...
Late to this one, but just finished Journey. What an amazing little game. Even though it’s pretty old at this point, I ended up finishing part of it together with another player I ran into, which definitely added something to the experience.
December 12, 2025 at 9:22 PM
Late to this one, but just finished Journey. What an amazing little game. Even though it’s pretty old at this point, I ended up finishing part of it together with another player I ran into, which definitely added something to the experience.
I guess in Cupertino it’s fine to release to prod on a Friday.
December 12, 2025 at 7:47 PM
I guess in Cupertino it’s fine to release to prod on a Friday.
Small milestone reached today, with the first version approved for external TestFlight testing.
December 12, 2025 at 7:33 PM
Small milestone reached today, with the first version approved for external TestFlight testing.
Control Resonant - Announcement Trailer | PS5 Games
YouTube video by PlayStation
youtu.be
December 12, 2025 at 7:21 AM
Reposted by Kristoffer Johansson
It's my birthday, but today *you* get the presents!
Introducing "Beans", a CLI-based, flat-file issue tracker designed for humans and their robot friends. 🫘
Track your work right in your repo, using the CLI. And if you work with coding agents, supercharge them with a full picture of your project!
Introducing "Beans", a CLI-based, flat-file issue tracker designed for humans and their robot friends. 🫘
Track your work right in your repo, using the CLI. And if you work with coding agents, supercharge them with a full picture of your project!
December 8, 2025 at 3:36 PM
It's my birthday, but today *you* get the presents!
Introducing "Beans", a CLI-based, flat-file issue tracker designed for humans and their robot friends. 🫘
Track your work right in your repo, using the CLI. And if you work with coding agents, supercharge them with a full picture of your project!
Introducing "Beans", a CLI-based, flat-file issue tracker designed for humans and their robot friends. 🫘
Track your work right in your repo, using the CLI. And if you work with coding agents, supercharge them with a full picture of your project!
Reposted by Kristoffer Johansson
I haven’t completed it but I have started modernizing the Apple Mac HIGs here. I have topics on toolbar guidelines and layout guidelines that are detailed, illustrated, and modernized.
marioaguzman.github.io/design/
marioaguzman.github.io/design/
Design Resources for Mac
Resources for designing great Mac apps that follow common desktop patterns using native views and controls.
marioaguzman.github.io
December 10, 2025 at 5:49 PM
I haven’t completed it but I have started modernizing the Apple Mac HIGs here. I have topics on toolbar guidelines and layout guidelines that are detailed, illustrated, and modernized.
marioaguzman.github.io/design/
marioaguzman.github.io/design/
I’ve been using @kagi.com as my main search engine since January, and it’s great. If anyone wants to try it, here’s a link that three people can use to get three months for free.
kagi.com/p/THANKSGIVI...
kagi.com/p/THANKSGIVI...
Kagi Search
Better search results with no ads. Welcome to Kagi (pronounced kah-gee), a paid search engine that gives power back to the user.
kagi.com
December 10, 2025 at 8:53 AM
I’ve been using @kagi.com as my main search engine since January, and it’s great. If anyone wants to try it, here’s a link that three people can use to get three months for free.
kagi.com/p/THANKSGIVI...
kagi.com/p/THANKSGIVI...
Reposted by Kristoffer Johansson
The Nobel Prize committee should announce the World Cup winner tomorrow
December 6, 2025 at 4:29 AM
The Nobel Prize committee should announce the World Cup winner tomorrow
Reposted by Kristoffer Johansson
🎉 10 years of open source Swift! A decade ago today, we opened Swift to the world with a simple blog post: swift.org/blog/welcome
What's grown since—thanks to an incredible community of contributors—has been extraordinary. Here's to the next ten years. 🧡
What's grown since—thanks to an incredible community of contributors—has been extraordinary. Here's to the next ten years. 🧡
December 4, 2025 at 12:08 AM
🎉 10 years of open source Swift! A decade ago today, we opened Swift to the world with a simple blog post: swift.org/blog/welcome
What's grown since—thanks to an incredible community of contributors—has been extraordinary. Here's to the next ten years. 🧡
What's grown since—thanks to an incredible community of contributors—has been extraordinary. Here's to the next ten years. 🧡
Reposted by Kristoffer Johansson
Alan Dye is leaving Apple. More on @macstories.net: www.macstories.net/news/bloombe...
Bloomberg Reports That Alan Dye Is Leaving Apple
Mark Gurman, writing for Bloomberg, reports that Alan Dye, Apple vice president of Human Interface Design, is leaving the company to head up Meta’s design team. Dye’s departure was confirmed by Apple ...
www.macstories.net
December 3, 2025 at 8:19 PM
Alan Dye is leaving Apple. More on @macstories.net: www.macstories.net/news/bloombe...
Late to this one, but `TimelineView` comes in really handy when building timer views.
November 30, 2025 at 10:44 PM
Late to this one, but `TimelineView` comes in really handy when building timer views.
Day well spent
November 29, 2025 at 11:29 PM
Day well spent
Enabled a few of these upcoming Swift features in @strengthy.app lately.
November 29, 2025 at 8:53 PM
Enabled a few of these upcoming Swift features in @strengthy.app lately.
This looks really useful.
So I built Cupertino - offline Apple documentation for AI agents.
22K+ docs. Local SQLite. Zero hallucinations.
aleahim.com/cupertino/
#Swift #ClaudeAI #MCP
22K+ docs. Local SQLite. Zero hallucinations.
aleahim.com/cupertino/
#Swift #ClaudeAI #MCP
Cupertino: Offline Apple Documentation for AI Agents - Aleahim
An MCP server that gives Claude Desktop offline access to 22,000+ Apple documentation pages
aleahim.com
November 28, 2025 at 7:49 AM
This looks really useful.
Finished the Battlefield 6 campaign. Had low expectations going in, and they were pretty much met. Action-packed but the story felt hollow. Multiplayer is fun though.
November 27, 2025 at 7:03 PM
Finished the Battlefield 6 campaign. Had low expectations going in, and they were pretty much met. Action-packed but the story felt hollow. Multiplayer is fun though.
Reposted by Kristoffer Johansson
log in with your internet handle
Internet Handle
internethandle.org
November 27, 2025 at 6:14 PM
log in with your internet handle
Good morning!
November 19, 2025 at 9:02 AM
Good morning!
Reposted by Kristoffer Johansson
• web browser
(noun) a fork of chromium
• text editor
(noun) a fork of vscode
(noun) a fork of chromium
• text editor
(noun) a fork of vscode
November 18, 2025 at 7:42 PM
• web browser
(noun) a fork of chromium
• text editor
(noun) a fork of vscode
(noun) a fork of chromium
• text editor
(noun) a fork of vscode
Our ongoing bathroom renovation has definitely made me realize that I’m not the kind of person who should buy a home that requires a lot of work. All of the dust everywhere and the overall mess is really bothering me.
November 15, 2025 at 10:45 AM
Our ongoing bathroom renovation has definitely made me realize that I’m not the kind of person who should buy a home that requires a lot of work. All of the dust everywhere and the overall mess is really bothering me.
I love how you can type something into the search field in the Xcode documentation browser and nothing happens, no loading indicator, no nothing, and then, just when you’re about to start wondering if the window is frozen, the search results pop up.
November 14, 2025 at 7:34 PM
I love how you can type something into the search field in the Xcode documentation browser and nothing happens, no loading indicator, no nothing, and then, just when you’re about to start wondering if the window is frozen, the search results pop up.
Cory Doctorow describes why I’m personally not interested in AI-generated art very well in his interview on Decoder.
podcasts.apple.com/us/podcast/d...
podcasts.apple.com/us/podcast/d...
November 14, 2025 at 5:58 PM
Cory Doctorow describes why I’m personally not interested in AI-generated art very well in his interview on Decoder.
podcasts.apple.com/us/podcast/d...
podcasts.apple.com/us/podcast/d...