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