Trach - Trachtenberg app for iPhone and iPad

Trach is the ultimate app for learning and practicing the Trachtenberg method—a system of mental math techniques that make complex calculations quick and intuitive.

With step-by-step tutorials and practice exercises, you’ll develop a deep understanding of rapid multiplication, all while sharpening your number sense.

Why Trach?
- Learn the Trachtenberg method at your own pace
- Practice with problems of varying difficulty
- Track your progress and improve over time
- No ads, no distractions—just pure learning

Master calculations like 172413 × 11 in seconds. Whether youre a student, a math enthusiast, or just curious about mental math tricks, Trach makes learning effortless.

Download Trach today and start multiplying faster than ever.