Small tools, games, and experiments I made
A Baekjoon-style judge in your browser
2,091 visitors last week
AI picks and summarizes news on your topic
415 visitors last week
Specimen of this site's typeface
47 visitors last week
How many tokens did I use?
28 visitors last week
Live quota across my AI coding accounts
21 visitors last week
How much compute am I using?
17 visitors last week
Pass one phone. Find the liar
15 visitors last week
Climb from Greater Peon to Greater Dalmuti
13 visitors last week
arXiv papers with margin notes, figure guides, and a critical review
9 visitors last week
Is the name taken? Plus an honest AI score
5 visitors last week
Sleep, readiness, and steps, by day
Who visits, from where, and how fast it loads
Blackjack with friends, AI optional
3 visitors last week
Standard Korean into regional dialects
2 visitors last week
Flip a 3D coin
Spin a toy revolver until one name is left
What I'm listening to
Mafia on your phones, hosted by an AI
Sunghyun's Apple Wallet business card
Get interviewed by a live voice agent
1 visitor last week
Spin the bottle
March your flag past an army of hidden ranks
Curated reading paths
Play Sunghyun, AI, or a friend
Roll 3D dice
Think out loud with a duck that asks questions
cho.sh