Build vs NumDrill

Turn 1–5 minutes into real math practice. Build‑A‑Math is a focused drill app for mastering addition, subtraction, multiplication, and division. Tap answers on the large on‑screen keypad, get instant feedback, and watch your progress bar fill as you work. # Why it works - Short, focused sessions (1–5 minutes) keep practice consistent and stress‑free. - Instant feedback with gentle haptics, color, and sound—celebrate correct answers and learn from mistakes. - Smart rotation of questions: a small set of problems stays in play; fast, correct solves are retired so you can move forward confidently. - Results you can feel: a cheerful summary shows Questions tried and Mastered today after each session. # Designed for real life - Pick the operations you want: +, −, ×, ÷. - Auto‑check answers as you type (single‑digit checks instantly; two‑digit checks on the second digit). - Works great in portrait or landscape on iPhone and iPad. - No ads. No accounts. Works offline. Perfect for classroom warm‑ups, brain breaks, and at‑home practice—anytime you have a minute (or five).

Can you still calculate a tip, split a bill, or work out a percentage in your head? Every time you reach for a calculator or ask AI, your mental math skills quietly fade. The good news: they come back fast with regular practice. NumDrill is a focused mental math drill app designed for short, satisfying sessions. Instead of mindless scrolling or another mobile game, sharpen the brain you already have. ■ Who it's for · Anyone whose mental math has gotten rusty from over-relying on calculators or AI · Students preparing for exams or standardized tests · Professionals who want to stay mentally sharp · Anyone who suspects they're wasting time on games but keeps playing anyway ■ 10 Problem Categories - Arithmetic (addition, subtraction, multiplication, division — customize digits & decimals) - Quadratic expressions (factoring & expansion) - Trigonometry (sin / cos / tan values) - Square roots - Logarithms & Exponents - Ratio & Percentage (everyday percentage calculations) - Make10 / Make24 (card-based number puzzles) - Memory (memorize and recall grids of numbers & icons) - Mastermind (deduce a hidden number sequence with logic) - Calculator mode (Practice mental arithmetic using calculation patterns you frequently use in everyday life) ■ 3 Play Modes - Count / Timed / Endless ■ Features that keep you coming back - Streaks / Combos / XP / Global Leaderboards / Social Share ■ Customizable - Difficulty / Advance rules / Sound & Vibration Your brain is a muscle. Five minutes a day is all it takes. Open NumDrill.