MentalMather vs DigitAll

MentalMather measures your daily cognitive performance through mental math — not to teach you math, but to measure how sharp your brain is right now. HOW IT WORKS Take a quick Sharpness Test each day. The app compares your speed across addition, subtraction, multiplication, and division against your own historical baseline. The result is your Sharpness Score — a personalized metric that tells you whether you're performing above or below your norm. This isn't about getting better at math. It's about measuring your cognitive throughput. When your working memory is firing on all cylinders, you solve problems faster. When it's not — due to poor sleep, stress, or fatigue — your score reflects that. FEATURES - Sharpness Score — your daily cognitive performance metric, personalized to your baseline - Guided Assessment — finds your ideal difficulty level automatically - Quick Play — practice at your own pace with customizable difficulty, timing, and operations - Challenge Mode — create challenges and share them with friends via code or QR, then compare results - Detailed History — every session tracked with per-problem breakdowns and solve times - Stats & Analytics — sloppiness tracking, personal bests, per-operation performance - Light & Dark themes — premium dark mode with metallic design, clean light mode - Haptic feedback — feel your correct and incorrect answers - Works offline — all your data stays on your device WHY MENTALMATHER Most brain training apps are games disguised as science. MentalMather is a measurement tool. Your Sharpness Score compares you against yourself — not against strangers on a leaderboard. The question isn't "are you good at math?" It's "how sharp are you today compared to your own baseline?" Built for people who care about their cognitive performance and want a quick, honest daily check-in.

Find the right combination of numbers — use logic and clues! DigitAll is a puzzle game where you decode 4 numbers using math clues: digit sum, divisibility, difference, and more. After each guess, digits light up — you see what's correct, what's misplaced, and what's missing. DAILY CHALLENGE One puzzle a day — the same for everyone. Solve it, earn a unique country trophy, and keep your streak alive. TRAINING Unlimited practice with fresh puzzles. Sharpen your skills at your own pace. TROPHY COLLECTION Every solved daily earns a reward. Collect all continents! HOW TO PLAY 1. Read the clues: Σ=8, ×2, Δ64 2. Enter 4 numbers (0–255) 3. Green = correct, yellow = misplaced, red = wrong 4. Solve it in 6 attempts • Unique mechanic — not sudoku, not a crossword • New challenge every day • Stats and win streaks • 18 languages • No ads Think. Analyze. Solve.