N-Back Hz

A dual n-back trainer built for performance. Precise audio-visual synchronization and instant feedback. Train your working memory — the mental ability behind focus, learning, and problem-solving. N-Back Hz is designed for serious practitioners who want a fast, responsive, and deeply configurable training experience. Built from the ground up, N-Back Hz delivers zero-lag stimulus timing that you can feel from your first session. THREE WAYS TO PLAY — Campaign — structured tracks across Beginner, Variants, Speed, Patience, and Endurance, each with leveled progression and perfect-run stars — Daily Training — a focused routine with streaks, weekly progress, and a daily target — Quick Play — pick an N and go, with full per-session control ADAPTIVE SKILL RATING An Elo-inspired rating system tracks your ability per configuration. Your first 10 blocks calibrate faster, then the system smoothly adjusts based on sustained performance — no jarring jumps from a single lucky or unlucky block. DEEP STATISTICS — Skill rating progression charts — Reaction time histograms — Position heat maps revealing spatial blind spots — Per-session drill-down with trial-by-trial data — Filter by game mode, pace, and stimulus duration — Export all data as CSV GAMIFICATION THAT REWARDS REAL TRAINING — Daily streak with configurable Lenient or Strict mode — Skill badges that unlock as you reach new tiers — Weekly progress and training calendar in your Profile — Best streak and lifetime stats at a glance FULLY CONFIGURABLE — 4 pace options (2.0s – 3.5s intervals) — 3 stimulus durations (300ms, 500ms, 700ms) — Customizable letter sets with male and female voices — Independent Daily Training and Quick Play settings — Haptic, visual, and audio feedback toggles — Customizable accent colors and per-theme grid backgrounds with live preview — Four themes tuned for different lighting: Dark, Matte, Black (true OLED), and Light LEARN BY DOING A built-in tutorial walks you through dual n-back with a guided demo and a hands-on practice block — no manual, no guesswork. BUILT FOR FOCUS — 120Hz ProMotion rendering — Clean, distraction-free game interface — No ads, no distractions TRAIN FOR FREE Play freely up to N=4 in Daily Training and Quick Play, plus the full Beginner and Variants Campaign tracks — enough to build real working-memory gains. Unlock the deeper levels and the Speed, Patience, and Endurance Campaign tracks with a single $4.99 purchase. No subscriptions, no ads, ever. FULLY OFFLINE No account required. No data leaves your device. Just open the app and train. Part of the Levmeup ecosystem — a suite of precision brain and fitness training apps. Learn more at levmeup.com