It is a reading-aloud calculation app for abacus and mental arithmetic practice. 25 languages ​​(Japanese, English, French, German, Italian, Spanish, Czech, Dutch, Polish, Catalunya, Danish, Finnish, Croatian, Hungarian, Korean, Portuguese, It is available in Russian, Slovak, Albanian, Serbian, Swedish, Thai, Turkish, Vietnamese and Chinese). The number of words, the number of digits, and the reading speed can be set individually, and you can set the questions in any combination you like. You c