Flash Mental Calc vs Tesseract

Boost your mental math skills with Flash Mental Calculation! A simple and effective training app where numbers flash on screen and you calculate the sum as fast as you can. 【Features】 · Addition, Subtraction & Mixed mode · Customizable difficulty (digits, count, speed) · Sound & haptic feedback · Japanese / English / Chinese 【Premium - one-time】 · Mixed mode (addition + subtraction) · Unlimited custom difficulty · Accuracy charts & statistics

Point your camera at a problem — or just type what you need. Tesseract returns a short video explanation, not a list of steps. Most math apps tell you what the answer is. Tesseract shows you how to actually think through it — with visuals, diagrams, and step-by-step breakdowns that move. You can solve a question, get a full topic explained from scratch, or ask about one specific concept you're stuck on. It adapts to what you ask. Works across math, physics, engineering, and other STEM subjects. High school to university level.