Applight
A predictive Mac app switcher that learns your workflow and puts the right app first.
Independent developer
Hi, I'm Seungwoo.
I build apps, write about the process, and share the everyday life around solo software work.
TypeKo
A Korean typing practice app shaped around recognition, listening, and recall.
SpeakGym
A speaking practice app for getting thoughts out clearly, then improving the next take.
Calendar Insights
A private calendar analysis app for seeing where time actually goes.
Other work
More things I made with care.
DayCanvas
A day planner for arranging tasks, routines, and time blocks without clutter.
LaunchPalette
Create organized keyboard palettes for the apps, files, projects, windows, and scripts you use on Mac.
TabBack for Safari
Switch through recent Safari tabs with a customizable shortcut and visual previews.
Pebble
A Mac menu bar timer with presets, keyboard shortcuts, and an optional floating timer.
MultiAlarm
Create fixed or custom alarm sequences quickly when one alarm is not enough.
Evolution
Explore natural selection through a simple interactive simulation on iPhone and iPad.
Hidy
Clear your Mac workspace instantly with a menu bar control or keyboard shortcut.
QuickSleep
Put your Mac to sleep immediately from the menu bar or with a dedicated shortcut.
xcode-tools
Small shell scripts that strip Xcode build and test output down to the lines worth acting on.
DictionAnki
A macOS utility for turning words from the system Oxford Dictionary into English Anki cards.
Writing
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SwiftUI Preview crashes with List ForEach subviews on macOS
When using a custom subview inside List ForEach for macOS, Xcode Preview crashes. Add AnyView(EmptyView()) as a workaround.
Streamlining xcodebuild for AI-assisted development
xcodebuild's output is verbose, and test failures don't include why they failed. A pair of wrapper scripts can fix this.
Fixing fastlane metadata download for macOS apps
When fastlane init fails to download metadata for a macOS app, using `deliver init` with the platform flag provides a reliable workaround.
Switching back to Qwerty after 5 years of Dvorak
Dvorak was more comfortable to type on, but the friction with keyboard shortcuts and compatibility made me switch back to Qwerty.