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About this app

◇◆◇◆◇◆◇◆◇ This is an app for improving short-term memory. ◇◆◇◆◇◆◇◆◇
It has the effect of improving working memory. Starting with imitation of two-digit numbers, modes include forward recitation (imitation from the beginning), "reverse recitation" (imitation from the end), and "alternation" (imitation alternately from the beginning and end). It is designed to improve your concentration and auditory memory. It can be used by everyone from children as young as 3 years old to the elderly.

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Memorize and answer the number cards that are displayed.
You can train your short-term memory in three modes.
The questions range from ``2 digits'' to a maximum of ``9 digits''.

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Children who are told the same thing over and over again can't understand what they're saying and can't follow their actions. Children who have trouble concentrating or paying attention may also have poor auditory memory. This app was created for those people to strengthen their short-term memory.

◎It is a system that memorizes one number per second, so if you can memorize a ``3-digit number'', it is a problem of ``memory capacity for 3 seconds''.

◎Reciting a memorized number sequence upside down strengthens the ability to recall things once memorized.

◎There is a challenge mode where you can record your play results for the past 4 days.

◎By inputting answers using the number buttons, you can also train your eye-hand coordination.

It is based on a treatment program that has been implemented as a support project and has been recognized as effective.

*However, the effects may vary from person to person.

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Original idea: Yuko Nagata
NPO Child Caring Association Representative Director
Representative of Chofu Developmental Support Classroom
Executive Director, Japan Society for Child Studies
Clinical developmental psychologist, certified music therapist, CRN (Child Research Net researcher)
Updated on
9 Oct 2025

Data safety

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No data shared with third parties
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No data collected
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Committed to follow the Play Families policy