Fun and useful web apps — no install, just start.
Beat indecision — spin the wheel for today's meal 🍽️
Pick 6 lucky lotto numbers with one tap 🎰
See how many days until exams, trips, and anniversaries 📅
Slide the tiles to put numbers 1–15 back in order
Line up four in a row before your opponent does
Play classic 3x3 Tic-Tac-Toe against AI or a friend
Write Markdown and see the rendered preview instantly
Measure how fast you can click (CPS) against the clock 🖱️
Instantly turn text into SHA-1/256/384/512 hashes, ready to copy
Convert Unix timestamps ↔ dates in real time, with the current epoch at a glance
Generate standard unique IDs (UUIDs) in bulk — copy in one tap
Turn text, URLs, or contacts into a square 2D barcode — download in one tap
Jump and duck past oncoming obstacles in this endless side-scroller
A simple to-do you can use right away — auto-saved in your browser
Snap-judge left or right to climb an endless staircase
Mix white, pink, and brown noise with rain for focus and sleep
Pretty-print or minify JSON, with exact syntax-error locations
Turn URLs, text, or Wi-Fi info into a QR code instantly — download in one tap
Guess a two-syllable word by its jamo — a Korean take on Wordle
Pull the key color palette from any photo — in your browser, no upload
Real-time HEX/RGB/HSL conversion + auto complementary & analogous palettes
Flip and match pairs — a card game to test your memory
Deduce mines from the numbers — your first click is always safe
Add options and spin — a fair random picker wheel
Shrink photo size — converted in your browser, no upload
Strong passwords from cryptographic randomness — never sent to a server
A lap-recording stopwatch and an alarm timer in one
25 min focus + 5 min break — get in the zone with the Pomodoro technique
Tap the moment the screen changes — how many ms is your reaction?
How fast do you type? Measure your Korean typing speed over 5 sentences
Equal payment, equal principal, or lump-sum — preview monthly payment & total interest
Check your body mass index from height and weight instantly
What percent? What's the discount? — 4 handy percent calculations
Your exact age, Korean age, and days to your next birthday — all at once
Count characters with/without spaces and bytes in real time
Enter your salary to see monthly take-home pay after Korean taxes & insurance
Clear every dot while dodging ghosts in this maze arcade
Bounce the ball off your paddle to smash the bricks — an arcade classic
Endless puzzles in 3 difficulties — always a unique solution
Play 15-line Gomoku against AI or a friend
The classic snake — longer and faster with every bite
Slide tiles to merge matching numbers — reach 2048!
From length to data — convert 100+ units across 12 categories
The classic luck-of-the-draw — add names and outcomes, then climb
Play the classic Tetris right in your browser — no install
