This utility app helps you solve problems involving ratios and proportions. It calculates an unknown number based on the relationship between two other known numbers.
Rule of Three Calculator by Saran Dumronggittigule


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This utility app helps you solve problems involving ratios and proportions. It calculates an unknown number based on the relationship between two other known numbers.



This app provides comprehensive mobile services for campus cards, including traditional card functions like consumption and authentication, enhanced with QR code capabilities. It offers features for managing your campus card, paying various campus fees, and booking campus facilities.






Easily determine the capacity of structural steel beams and columns. Get detailed calculation sheets to verify your work, designed according to AISC 360-16 standards. Features intuitive touch-based interaction and built-in material databases.




This utility app offers a straightforward calculator with a customizable flat design. Users can select from five color themes and choose a preferred function key from options like percentage or tax. It also features calculation history and clipboard integration for easy data transfer.


This calculator app offers ultra-high precision with up to 37 digits of accuracy. It supports a wide range of complex mathematical functions, including trigonometric, logarithmic, and integral operations, along with step-by-step calculation display and undo/redo functionality.




A straightforward calculator app designed for simplicity and ease of use. It features large buttons and a clear display, supporting basic arithmetic operations like addition, subtraction, multiplication, and division.