An app to learn the basics of ladder logic, which is a graphical programming language. Free version available.
This app helps you learn how to calculate questions about distance, time and speed with animation in which a car is running.
Given two of the distance, time, or speed, you can calculate the other one.
This is a cassette player for albums.I have reproduced experiences of listening music with a cassette tape. Free version available.
This is a music sequencer using numeric data. This app is for making MIDI data to send to an another app applied to virtual MIDI. iPad only.
The app analyzing the popularity of kanji. Color to represent the grade level in which the character is taught in Japan.
A game where you tap all the balls to make them disappear. There are rules for the order of erasing. Finding the order is the key to the game.
This is an app for Kyotsu Test, the test widely used in Japanese university entrance exams, dealing especially with probability problems in mathematics.
This app displays kanji, emoji, or other characters in large size. I made this to help you look up kanji you can't write. This is especially useful when you use an iPad and display this app on one of the two windows.
Quiz to guess the prefecture of Japan. The surrounding prefectures are shown. Guess based on that.
Quiz to guess the state of the United States. The surrounding states are shown. Guess based on that.
This app is a two-player Monty Hall game. One player acts as the host and determines which door is the winner before the game starts, making the results feel more reliable.
This is a slider for low volume that allows more precise control than the iPhone's side buttons.
You record the natures of a word and use them as clues to remember its meaning. It is based on the hypothesis that when you memorize a word, it may be easier to remember the meaning if you are aware of the various natures of the word.
Displays the temperature in both Celsius and Fahrenheit. The aim of the app is to connect the unfamiliar scale with physical sensation.
This is an English vocabulary learning app using the image generation function by Apple Intelligence. You can use these images as a reference for memorization.