NBackCalc vs N

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

A daily training app based on the N-Back task, widely used in cognitive psychology research. Challenge your working memory with just 5 minutes a day. ◆ 3 TRAINING MODES • Single — Position: Memorize lit positions on a 3×3 grid • Single — Audio: Remember spoken letters via text-to-speech • Dual — Position + Audio: Train both at the same time for the ultimate challenge ◆ TRACK YOUR GROWTH • Accuracy trend chart and session history • Highest N-level reached • Streak counter to build a daily habit • iCloud sync keeps your training data on every device ◆ COMPETE & ACHIEVE • Game Center leaderboards: accuracy, max N-level, streak • 8 achievements from your first session to 30-day streaks ◆ DESIGNED FOR FOCUS • Zero ads during training — your concentration comes first • Clean, minimal interface inspired by fitness tracking tools ◆ SIMPLE PRICING • Free to use with occasional ads (never during training) • Optional Premium subscription removes all ads. Every training feature stays free ◆ ADJUSTABLE DIFFICULTY • N-1 to N-9: start easy and progress at your own pace • Suitable for students, professionals, and anyone looking to challenge their cognitive abilities Note: This app is a cognitive training tool based on the N-Back task used in research. It is not a medical device and does not diagnose, treat, or prevent any condition. Improvement in cognitive function is not guaranteed. Premium is an auto-renewing monthly subscription. Payment is charged to your Apple Account, and the subscription renews automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel it anytime in your Apple Account settings. Terms of Use: https://fukuidinotech.github.io/nback-training-site/en/terms.html Privacy Policy: https://fukuidinotech.github.io/nback-training-site/en/privacy.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/