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


12+ similar apps compared and reviewed
Looking for something like 挑戰860分 for the TOEIC®TEST? We've analyzed 12+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.


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 app makes learning English fun and effective for children through interactive word cards and engaging review sessions. It features vibrant images, pronunciations, and categorized vocabulary to build a strong language foundation.


This app offers a comprehensive vocabulary learning experience for IELTS test-takers. It features extensive word banks, AI-powered pronunciation assessment, and intelligent practice modes to help users master essential vocabulary for listening, speaking, reading, and writing.


Master vocabulary by understanding word roots. This app offers a scientific approach to memorization, including root exploration, intelligent recall, and practice tests. It also features audio pronunciation and customizable learning paths for a personalized experience.

