Playground

A collection of small apps and tools built for fun or personal use.

Tennis

Tennis Training Planner

Weekly drill scheduler based on available hours. Tracks adherence, recommends drills weighted toward your weak areas (currently: volley), and logs progress over 8 weeks.

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Finance

Household Budget Tracker

Monthly budget spreadsheet covering Jun 2026 – May 2027. Tracks income, expenses, investment, and savings. Totals calculate automatically; data saved in your browser.

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Game

🎴 고스톱 Score Tracker

Score tracker for the Korean card game Go-Stop. Supports 2–4 players, voluntary and forced folds, optional 광 sub-rounds, zero-sum row validation, and a live horse-race visualization with music.

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