Afterimage Memory vs NBackCalc

Afterimage Memory is a simple brain-training game that challenges you to memorize numbers for a moment, then find the one that changed. Look at the numbers on the screen, remember their positions, and tap the number that is different from your memory. The rules are easy to understand, but each stage asks for sharper memory, wider visual attention, and faster reactions. Stage Mode lets you progress through 15 stages with increasing difficulty. As you clear stages, the number of items and grid density increase, creating a steady memory challenge. Score Challenge is built for high-score runs. Keep your streak alive, build combos, and aim for a new personal best. Game Center rankings, score sharing, and satisfying effects make it easy to return for daily brain training. Main features: - Tutorial stage explaining controls, score, difficulty, and time limit - 15-stage Stage Mode with progressive difficulty - Score Challenge for high-score runs - Combo display, best-score effects, and high-score celebration - Haptic feedback for correct and wrong answers - Sound and vibration settings - Game Center leaderboard support - Share your results Afterimage Memory is designed for quick sessions, spare moments, and daily memory training.

NBackCalcは、認知科学で実証されたNバック課題をベースにした計算トレーニングアプリです。 【NBackとは？】 N個前の計算問題の答えを記憶しながら、新しい計算問題を解く二重課題です。「覚える」と「計算する」を同時に行うことで、ワーキングメモリ（作業記憶）を効率よく鍛えられます。 【特徴】 ・1〜10バックまで対応。自分のレベルに合わせて調整可能 ・加算・減算・乗算・除算から使用する演算を自由に選択 ・制限時間・問題数をカスタマイズ ・広告なし・完全無料 【こんな人におすすめ】 ・マルチタスクが苦手な人 ・あたふたしてしまいがちな人 ・物忘れが多いと感じている人