Train Your Cognitive Functions Enjoyably in 5 Minutes a Day
This site organizes training modules designed to provide balanced stimulation for the five cognitive functions considered essential for dementia prevention: memory, concentration, judgment, calculation, and language skills. You can choose exercises based on the specific function you wish to strengthen.
Memory Module
Train your ability to memorize new information and recall it when needed. Recommended for those who are concerned about forgetfulness.
Block Memory
This is a training exercise in which you memorize the colors and positions of the cards and find all the matching-color pairs.
Memory Test
This is a training exercise in which you memorize the animals and their positions on the displayed cards, then accurately click only the target card after they are turned face down.
What Time Is It
This is a training exercise in which you memorize the position of clock hands displayed briefly and then state the exact time, even after they have rotated and become hidden.
Concentration Module
Train your ability to stay focused on a single task and pick out only necessary information from multiple sources.
Vision Test
This is a training exercise in which you accurately identify the direction of the gap in a "C" shape—displayed for only a split second—and respond quickly.
Left Right Reflex Game
This training hones the reflexes and decision-making skills required to instantly determine the correct direction and tap accordingly, following the displayed instructions.
Odd Color Finder
This is a training exercise in which you must find the single block that differs in color from a large number of color blocks within a set time limit.
Judgment Module
Train processing speed and judgment skills to quickly grasp situations and take accurate, appropriate actions.
Reflex RPS Brain Training
This is a training exercise in which you instantly select the correct hand gesture in response to your opponent's move, following instructions to "win," "lose," or "tie."
Light Reflection
This is a training exercise in which you predict the path of a laser beam as it reflects off mirrors at 90-degree angles and click on the correct exit point.
Raven IQ Test
This is a non-verbal reasoning exercise in which you identify a pattern in a sequence of shapes and select the shape that comes next.
Calculation Skills Module
This training activates the prefrontal lobe of the brain to maintain logical thinking ability and fast information processing speed.
Math Speedrun 50
This is a training exercise in which you solve 50 calculation problems of varying difficulty as quickly and accurately as possible.
Matchstick Puzzle
This is a training exercise in which you move a part of a mathematical equation made of matchsticks to complete a correct equation.
Speed 10
This is a training exercise where you clear as many pairs of adjacent numbers as possible—either pairs that sum to 10 or pairs of identical numbers—within 60 seconds.
Language Skills Module
Enhance your ability to retrieve words smoothly, preserve vocabulary, and facilitate smooth communication.
Uncover Words
This is a training exercise in which you discover words or phrases hidden within a sea of characters according to specific rules.
Word Catcher
This is a training exercise where you trace characters—either vertically or horizontally—to find words that match a specific theme.
Basic Knowledge About Brain Training and Dementia Prevention
🧠 Why is brain training important for older adults?
As we age, just as physical strength and muscle mass decline, the brain's cognitive functions — including memory, concentration, and judgment — also gradually deteriorate. However, the brain possesses an ability called neuroplasticity, which allows it to adapt and change in response to new stimuli.
Consciously exercising your brain in daily life through brain training is believed to activate brain neurons and support the maintenance and improvement of cognitive function. In particular, stimulating areas of the brain that are not used in everyday life is extremely valuable for dementia prevention.
🌐 WHO Guidelines and Cognitive Function Training
In the dementia prevention guidelines published by the World Health Organization (WHO), cognitive function training is recommended to reduce the risk of cognitive decline in older adults with normal cognitive function and those with mild cognitive impairment (MCI).
The training modules on this site are designed with these guideline principles in mind, to help you build five key cognitive functions — memory, concentration, judgment, calculation, and language skills — in a well-balanced way.
🌱 3 Tips for Effective, Sustainable Brain Training
For brain training, short daily sessions are far more effective than occasional long sessions. Keep these points in mind as you build it into your daily routine.
- 5 minutes a day, keep it manageable: Set a fixed time such as after breakfast or before bed to turn training into a regular habit.
- Don't fixate on scores or mistakes: More than getting answers right, the process of thinking and engaging your brain is the core of the training.
- Combine multiple modules: Instead of repeating the same exercise every day, give your brain varied stimulation — try calculation one day, memory exercises the next.
This site is completely free and requires no installation. Bookmark it or add it to your home screen to support your daily dementia prevention routine.













