OJ Memory vs Working Memory Lab

OJ Memory is a simple and colorful memory game for kids ages 3–9. It is designed to be easy to understand, quick to start, and fun to play again and again. Kids can choose from Vehicles, Space, Sports, Animals, Food, and Plush Toys, select the number of cards, turn over two cards at a time, and try to find matching pictures. The game features clear images, calm transitions, and a leaderboard for every level so the family can follow progress. Six categories with 15 clear pictures in each Multiple difficulty levels with different numbers of cards A leaderboard for every level Medals for 1st–3rd place A record celebration when the player beats the best time Optimized for iPhone, iPad No ads No sign-in No in-app purchases No data stored outside the device OJ Memory is especially well suited to younger children who want to practice memory, recognition, and concentration in a safe and uncluttered game.

Working memory is the ability to hold something in your head and use it a moment later. Keeping a shopping list in mind. Taking notes while the teacher is still talking. Doing sums without paper. It quietly sits underneath almost everything we get done in a day. Working Memory Lab trains that ability with nine mini games. One to two minutes a round, for kids and grown-ups alike. NINE MINI GAMES - Reverse Recall — colours appear one by one; tap them back in reverse. Rearranging in your head. - Match Back — tap when a picture matches the one a few steps back. Taking in the new while letting go of the old (an n-back task). - Cup Shuffle — follow the swapping cups and find the ball. - Dual Task — solve a sum, then memorise a picture, over and over. The real thing: holding on while busy. - Copy the Order — tap the animals in the order they appeared. - Take the Order — remember what each table ordered. Some come alone, some as a family. - Number Flash — numbers flash by; add them all up in your head. - Math Relay — "plus 3", "times 2" — keep the running total going. - Grid Memory — remember which squares lit up, wait while the board goes dark, then tap them. BUILT TO KEEP YOU COMING BACK - Six levels, from Easy to Legend - Score grows with speed and with answers in a row - 24 badges and six ranks to climb - A daily play streak - Memory span — see, as a number, how much you can reliably hold - The app spots your weakest game and suggests practice SAFE FOR CHILDREN - No account. Everything stays on the device. - No ads. No in-app purchases. - Works fully offline. - Large type, clear colours, spoken prompts. - A short how-to appears before you play a game for the first time. FOUR LANGUAGES English, Japanese, Simplified Chinese and Spanish — text and voice both. Switch any time from Settings. A little every day. That is how memory grows.