OneJellie.
the Sweetest Fun
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About
One person, end to end
One Jellie is a one-person studio. I handle the whole arc — product thinking, design, and engineering — shipping each app from the first idea to the App Store, with AI as a force multiplier, not a crutch. The throughline is care: small, warm apps that are genuinely useful.
Things I've shipped
Apps
Grimm Diary
iOS
Crayon your day — a picture diary that still feels like paper.
NativeX
iOSmacOS
The on-device Apple Intelligence playground — run and inspect Apple's Foundation Models entirely on your iPhone.
VibeBooth
iOS
Photo booths to match every vibe
Watch Your Mouth
Web
Learn to say the time & date in Korean and Japanese
One Jellie.
More small, warm apps on the way.