An app to learn the basics of ladder logic, which is a graphical programming language.


An app about distance, time & speed field in math. This app helps you to learn to calculate it with the animation a car runs on.


A cassette player for albums. This app gives you the experiences of listening music with cassette tapes.


A music sequencer using numeric data. This app is for making MIDI data to send to an another app applied to virtual MIDI. Compatible with iPad.