Addition Challenge (plus.onl.jp)
A math practice web app where you solve addition problems one after another within a time limit. Great for improving children's arithmetic skills or as a brain workout for adults, with score recording.
Bingo Card (www.oh-benri-tools.com)
An online tool for generating and using bingo cards in a browser. Click card numbers to mark them, and pair with the Bingo Game tool to play bingo.
Bingo Game (www.oh-benri-tools.com)
An online tool for conducting bingo game draws in a browser. Numbers are shuffled when you start, and drawn numbers are displayed. Pairs with the Bingo Card tool to enjoy the full game.
Bingo Machine (saruwakakun.com)
A free online bingo machine. Draws numbers in roulette style and saves them automatically. Fullscreen mode makes it perfect for parties, weddings, or projector displays.
Click Speed Test (www.ruri.info)
Free click speed measurement tool. Choose from 10, 30, or 60 second durations and measure how fast you can click. Use as a mini-game in streams or as an OBS Studio browser source.
Dice Web (dice.onl.jp)
A web tool to roll dice in the browser. Roll one or multiple dice at a time, great for board games, tabletop RPGs, and other activities.
Division Challenge (divided.onl.jp)
A math practice web app where you solve division problems within a time limit. Great for improving children's arithmetic skills or as a brain workout for adults, with score tracking.
Drill Generator (lazesoftware.com)
Auto-generates English vocabulary and math drills. English covers 60+ categories (numbers, months, days, colors, animals); math covers addition, subtraction, multiplication, and division. Supports flashcard display and print output.
Flip a Coin (www.piliapp.com)
An online coin flip simulator. Click to flip a virtual coin and get a random heads or tails result for quick decision-making.
Four Pillars of Destiny (destiny.onl.jp)
A web app for fortune-telling based on the Four Pillars of Destiny (Shichusuimei / Ba-Zi) using birth date and time. Easily check personality and fortune through this traditional East Asian divination method.
Kana Flashcards (www.piliapp.com)
Online flashcards for learning Japanese hiragana and katakana. Practice recognizing kana characters with an interactive quiz-style interface to build reading skills.
Lunch Roulette (lunch.onl.jp)
A web app to randomly decide where to eat lunch using a roulette spinner. Register candidate restaurants and let the wheel choose for you — perfect for indecisive lunch decisions.
