iOS engineer, musician, artist. Currently working on Eki Live, a train tracking iOS app for Tokyo. Previously Cookpad, Timehop. @twocentstudios@hachyderm.io
Tokyo-to, Japan
Joined March 2011
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I wrote this! Read about my experience helping plan a 1-day offsite for our engineering team to level up our agentic engineering skills.
iOSテックリードのChrisさんが、エンジニアチームで開催した「エージェンティック・エンジニアリング・オフサイト」の様子をnoteにまとめてくれました！
プログリットのエンジニア17名がそれぞれ好きなプロジェクトに1日没頭し、AIエージェント活用のスキルを一段レベルアップする機会を設けており、企画の裏側から当日の学びまで書いてくれています😊🙌
note.com/chris_progrit/n/n2d…
New blog post: Print Design Mindset to App Design Mindset
twocentstudios.com/2026/01/2…
New blog post: Introducing Eki Bright 2.0
twocentstudios.com/2026/01/1…
New blog post: Closing the Loop on iOS with Claude Code
twocentstudios.com/2025/12/2…
A full breakdown of my build, install, launch, console logging, and simulator manipulation CLI commands to give Claude Code more opportunities to get its changes correct.
New blog post: Shinkansen Live - Developing the App for iOS
twocentstudios.com/2025/12/2…
A brain dump about the technical challenges of my latest app, Shinkansen Live.
I don't have the strength right now to investigate why the @1Password Chrome/Safari extension breaks syntax highlighting on static Jekyll blogs (including mine).
Today I'm releasing Shinkansen Live, an iOS app for putting your Shinkansen Ticket details in a Live Activity.
Try it on your next Shinkansen trip.
More details and screenshots:
xitter.cf/twocentstudios/status/…
New blog post: Shinkansen Live – Scan Your Ticket, Get a Live Activity
twocentstudios.com/2025/12/2…
New blog post: Shinkansen Live – Scan Your Ticket, Get a Live Activity
twocentstudios.com/2025/12/2…
New blog post: You Are a Frameworks Engineer at Big Tech Corp
twocentstudios.com/2025/12/1…
New blog post: SwiftUI Group Still(?) Considered Harmful
twocentstudios.com/2025/12/1…
In which I take a look at SwiftUI's `Group` container View to try to understand when `onAppear` and `task` break its semantics.
New blog post: Comprehensible Later: A Read-it-later App for Language Learners
twocentstudios.com/2025/11/1…
Is this a thing now? People using AI to generate entire websites full of slop for popular open source repos that don't have official sites? It's got fake blog posts and fake testimonials and everything.
