4択問題を自分で作って、覚えるまで出題する無料の暗記ツール。資格・語学・学校のテストまでジャンルを問わず使えます
Browser
1·4
Log in to react, save and follow.
Share your thoughts, bug reports, or suggestions directly with the developer
Log in to share your feedback
100種類のアニメーション＋3D（フリップカード・キューブ・メリーゴーランド）をプレビュー → 調整 → CSSコピペで使える
Just click to start the stopwatch. For students who want to manage their study time and boost their motivation.
Solving "I don't understand the rhythm of the sheet music." A web app for beginners learning to read music that lets you input exactly what you see and confirm it by sound.
I created this as a replacement for the discontinued Jamboard. A free whiteboard for elementary and junior high school teachers. No login required · Everyone can participate with just one URL. Voting/hand raising / Handwriting OCR / PDF teaching material import. Offline OK · GIGA compatible
A web application that allows parents and children to enjoy managing and tracking daily homework and goals in an easy-to-understand manner.
47都道府県の意外な順位を、1,000以上の公的データで発見できる無料サイトです。ランキング・地図・県対決・ストーリー記事で雑学を深掘りできます。
I will record the study time.
Don't just "calculate" N-ary numbers! This is a visual conversion tool where you can enjoy learning about conversions between binary, octal, decimal, hexadecimal, and other number systems while seeing the calculation process and the meaning of each digit with your own eyes.
問題と4択の選択肢（正解1つ・誤答3つ）を自分で登録して、覚えるまで出題する暗記ツールです。問題も答えも自分で作れるので、資格試験・語学・学校のテスト・仕事の用語など、ジャンルを問わず使えます。
主な機能
使い方と仕組みの解説：自分で作る4択問題集｜覚えるまで出題する無料の暗記ツール
![Rhythm Calculator [Renewed June 2026]](/_next/image?url=https%3A%2F%2Frnrwjstsbynqlivkqlce.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscreenshots%2F19095a93-89b7-4ef0-8f4e-41a5ee66937f%2F0ebcdb90-fbdc-4d82-9ed9-da16235aa54b.png%3Fv%3D2&w=3840&q=75)
Reactions & commentsFeedback
Share your thoughts, bug reports, or suggestions directly with the developer
Log in to share your feedback
Log in to leave feedback