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.
A professional financial tool designed to help entrepreneurs and freelancers automatically split their profits into Tax, Savings, Investment, and Operating Expense buckets based on customizable percentage rules.
An interactive Numberblocks calculator featuring "Pregnant 1" with a belly that rumbles (vibrates) continuously. Includes the Numberland Ambulance and the ability to deliver "Baby 1" by clicking the rumbling belly.
A professional, high-trust CPD (Continuing Professional Development) calculator designed for medical professionals to plan their conference attendance and track credit requirements in real-time.
A professional-grade basketball projection tool that estimates final scores and total points by analyzing the direct interaction between two teams' offensive efficiency, defensive efficiency, and pace metrics.