In this app, one, ten, hundred, thousand, million, billion, trillion, kyo, dan, shuttle, jun, mizo, gans, positive, tsu, pole, Tsunekawa, We aim at memorizing up to Asukagi, Nayu and others, mysterious and infinitely large numbers. In list mode, a large number of names to be memorized are displayed. In tap mode, you can instantly switch to the next major number and use it like an electronic deck or flash card. The test mode has the following two patterns. ① Test to answer a large number of