Educational application that introduces numbers from 0-20 for those who want to learn Indonesian. There is a feature to pronounce numbers one by one and spell the letters that make up the number. Application features: * Display a list of numbers from 0-20. * Interesting game by building a word. * Able to pronounce the original human voice. * Say the letters that make up the name of a number. * Can choose to use uppercase or lowercase letters. * Recall feature with an automatic difficulty level.