PFP Lineup
Compare favorite photos side by side, preview them in context, and create a polished profile picture with editing tools.
iOS · iPadOS
Independent software developer in Seoul
Hi, I'm Seungwoo.
I build apps, write about the process, and share the everyday life around solo software work.
ArchiveCut
Trim unused media from Final Cut Pro projects, events, and libraries to reclaim storage.
TypeKo
Practice Hangul typing while Korean words become easier to recognize, hear, and recall.
SpeakGym
Practice getting your thoughts out clearly with prompts, listen-back feedback, and second takes.
Other work
More apps and open-source projects.
Calendar Insights
Visualize where your calendar time goes with groups, trends, and privacy-friendly Apple Calendar analysis.
iOS · iPadOS · macOS
Applight
Switch between Mac apps faster with predictions that learn your workflow and put the right app first.
macOS
DayCanvas
Plan tasks, routines, and time blocks with a focused day planner that stays out of your way.
iOS · iPadOS · macOS
LaunchPalette
Create organized keyboard palettes for the apps, files, projects, windows, and scripts you use on Mac.
macOS
TabBack for Safari
Switch through recent Safari tabs with a customizable shortcut and visual previews.
macOS
Pebble
Start timers from your Mac menu bar with presets, keyboard shortcuts, and an optional floating timer.
macOS
MultiAlarm
Create fixed or custom alarm sequences quickly when one alarm is not enough.
iOS · iPadOS
Evolution
Explore natural selection through a simple interactive simulation on iPhone and iPad.
iOS · iPadOS
Hidy
Clear your Mac workspace instantly with a menu bar control or keyboard shortcut.
macOS
QuickSleep
Put your Mac to sleep immediately from the menu bar or with a dedicated shortcut.
macOS
xcode-tools
Small shell scripts that strip Xcode build and test output down to the lines worth acting on.
Open source
DictionAnki
Turn words from the system Oxford Dictionary into English Anki cards on your Mac.
Open source
