JAY Project Free Web Tool Catalog
JAY Project is a catalog of small tools you reach for every day. Finance, health, luck, skill tests, music practice, and utilities — over sixty browser-based tools sorted into six categories, free to use without signup or payment. Every input stays inside your browser and is never sent to a server, so any quick calculation or note can be done with privacy.
Browse by category (60 tools total)
Life & Health
12 tools
BMI, BMR, calorie calculators, sleep cycles, breathwork guides, water tracking, habit logs, unit conversions, menu picker, and a gratitude journal — practical tools for daily habits. Free.
Music & Hobby
2 tools
Build finger independence with the chromatic trainer and lock your timing with the metronome — the essentials every player reaches for during daily practice.
Luck & Fortune
10 tools
Lottery generator, fair draw / ladder / roulette, dice, bomb game, fortune cookies, AI dream interpretation, name and zodiac compatibility — quick, fair, and fun decision tools.
Skill & Fun
8 tools
Reaction time, click-speed challenge, 1-to-50 game, 10.000-second stop, typing practice, color sensitivity, balance dilemmas, and rock-paper-scissors — bite-sized focus and reflex tests.
Finance
12 tools
Take-home pay, compound and DCA returns, dividend reinvestment, FIRE simulation, loan amortization, rent vs buy, car financing, and bill splitting — every money calculation in one place. Free, no signup.
Tools
16 tools
QR generator, JSON formatter, password generator, Base64, regex tester, Markdown preview, image converter, text diff, age & D-day, world clock, team picker, and more.
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