Small tools, games, and experiments I made.
A Baekjoon-style judge right in your browser.
438 visitors last week
Pick a topic and AI fetches, scores, and summarizes the stories worth reading.
276 visitors last week
Live quota headroom across my pooled Claude Code, Codex, and Grok accounts.
116 visitors last week
How many tokens did I use?
54 visitors last week
A type specimen for the family this whole site is set in.
39 visitors last week
Sleep, readiness, and steps from my health devices, one value per day.
20 visitors last week
A little record shop of what I'm listening to.
15 visitors last week
Pass one phone around: everyone gets the word but the liar. Vote them out.
14 visitors last week
Reading agents unroll an arXiv paper into margin notes, figure guides, and an adversarial review.
11 visitors last week
Type a name and see what's taken, with an honest AI vibe score.
6 visitors last week
Play Sunghyun, AI, or a friend, with AI at your side if you like.
Spin the toy revolver until one name is left.
5 visitors last week
Create Sunghyun's Apple Wallet business card with where and when we met.
Spin the bottle to pick someone from the circle.
3 visitors last week
Flip a 3D coin when you just need heads or tails.
2 visitors last week
A party table against the dealer, with AI dealt in if you like.
Climb from Greater Peon to Greater Dalmuti, one unfair hand at a time.
Turn standard Korean into its regional dialects, side by side.
1 visitor last week
Party Mafia, each on their own phone, hosted live by an AI game lead.
Think out loud with a duck that listens and asks the right questions.
Curated reading paths through the digital garden.
Upload your materials and get interviewed by a live voice agent.
Roll a handful of 3D dice and read the sum.
March your flag past an army of hidden ranks.
cho.shcho.sh