N vs Schulte

Dual N-Back is a scientifically-backed cognitive training game designed to strengthen your working memory and fluid intelligence. First introduced by Wayne Kirchner in 1958 and popularized by Susanne Jaeggi's landmark 2003 research, the N-back task remains one of the most studied tools in cognitive neuroscience. Each round, you're shown a sequence of positions on a grid and hear a sequence of spoken letters. Your goal: identify when either the position or the letter matches what appeared N steps earlier. As your accuracy improves, the game advances your N-level — pushing you further. Game Modes: Dual N-Back lets you track both auditory and visual stimuli simultaneously — the most challenging and most studied mode. Single N-Back focuses on one stimulus type at a time, great for getting started or isolating a weakness. Silent Dual N-Back is visual-only, ideal for quiet environments. Adaptive difficulty adjusts your N-level based on performance. Score history lets you track progress over time. Light and dark mode included. Clean, distraction-free interface built for focus. No ads. No subscriptions. No nonsense. Whether you're a student, professional, or just someone who wants to stay sharp, Dual N-Back gives you a rigorous, research-grounded workout for your mind.

Improve your focus, peripheral vision and reading speed in minutes a day with classic Schulte tables. Pick a grid, tap 1-2-3… as fast as you can, watch your brain get sharper. WHY SCHULTE - FOCUS GAME?
 - 2×2 to 10×10 grids - grow from beginner to master
 - Enable timer if you want to know how fast you are 
- Dark mode support 
- Only 1MB of space required 
 - Completely free, no subscriptions, no ads, no tracking - Your personal stats (solving speed) with charts
 BENEFITS
 - Better concentration & selective attention - Wider peripheral vision - useful for speed reading
 - Fun micro-breaks that keep you away from social-media doom-scrolling HOW IT WORKS 1. Customize grid size in settings. 2. Find and tap numbers in ascending order as fast as possible. 3. Repeat daily, try different sizes to push cognitive adaptation. CUSTOMIZATION - Grid sizes: 2x2 up to 10x10
 - Haptic feedback: on/off - Timer: on/off - Game modes: number/letters/roman numerals - Order: ascending / descending - Daily Goal: 1-15 minutes - Hide cells on click: on/off - Mark starting cell: on/off COMING SOON - Daily goal notifications