SpeedMath.cafe
Learn the Trachtenberg system and calculate faster than ever before! A mental math training app that teaches the Trachtenberg system through interactive, progressive lessons — from simple 2× multipliers to complex multi-digit calculations
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About the startup
Learn the Trachtenberg system and calculate faster than ever before! A mental math training app that teaches the Trachtenberg system through interactive, progressive lessons — from simple 2× multipliers to complex multi-digit calculations.
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