QZBrain: Brain Training Games

QZBrain offers a calm, minimalist way to exercise memory, attention, focus, mental math, and flexible thinking. Start a curated five-minute daily workout with five games, or choose from nine adaptive brain games across memory, attention, speed, and numbers. Difficulty adjusts to your performance across four tiers, creating focused practice without streak pressure or countdowns.

Track your NeuroIndex, 30-day average, weekly trends, personal bests, milestones, and per-game performance. Arcade Mode adds separate survival challenges and high-score tracking. QZBrain works fully offline with no account required, supports light and dark modes, three themes, and 11 languages. The free version includes the daily workout and selected games, while QZBrain Plus unlocks the full library, advanced insights, coaching tips, arcade games, and additional themes. Designed for everyday cognitive exercise and entertainment, not medical diagnosis or treatment.