A playful Numberblocks-inspired calculator featuring "Round Pi" – a special circular character. Includes a Pi Memory Game where you build the sequence of Pi, text-to-speech for every number, and a dynamic "Numberland" stage where blocks scale to fit the screen.
An advanced digital replica of the Curta mechanical calculator featuring customizable themes (including Frutiger Aero), mechanical sound effects, and haptic visual feedback. This simulator mimics the stepped-drum mechanism for high-precision mechanical arithmetic.
A digital tribute to the legendary Curta mechanical calculator. This simulator replicates the unique "stepped drum" logic of the world's smallest mechanical calculator, allowing for addition, subtraction, and multiplication through a series of rotations and slider adjustments.
A high-end digital tribute to the legendary Curta mechanical calculator. This counter mimics the tactile precision and industrial aesthetic of the "Math Pepper Mill," featuring a crank-based increment system, a clearing ring, and a dual-mode carriage for addition and subtraction.
A digital tribute to the legendary "Peppermill" mechanical calculator. This simulator replicates the unique stepped-drum mechanism of the Curta Type I, allowing you to perform addition, subtraction, multiplication, and division through mechanical-style interactions.
A digital homage to the legendary Curta mechanical calculator. This tool replicates the tactile feel of the "Math Pepper Grinder" with a vertical cylindrical interface, stepped drum logic, and a mechanical aesthetic. It features a sliding carriage, a hand crank animation, and a physical-style clearing ring.
A digital tribute to the legendary "Pepper Grinder" mechanical calculator invented by Curt Herzstark. This simulator replicates the unique stepped-drum mechanism, allowing you to perform addition, subtraction, and multiplication using the iconic crank-and-slider interface.