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


14+ similar apps compared and reviewed
Whether you want more options like Speak It or a completely different take on the same concept, our curated list of 14+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.


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 facilitates communication for individuals with speech or hearing disabilities. It offers real-time audio transcription, text-to-speech conversion, and translation in multiple languages, including offline support. A customizable pictogram library and business-specific navigation features enhance accessibility.


This utility converts Arabic text to speech using advanced AI. It offers automatic diacritization for accurate pronunciation and allows users to select from natural-sounding voices. Outputs can be saved as audio files.


This app assists individuals with speech impairments by converting typed text into spoken words. It offers pre-defined phrases, customizable voices, and appearance settings to facilitate communication.


Convert typed text into natural-sounding speech with various voice options. Read text from files, scanned documents, or typed input. Follow along with highlighted text as it's read aloud.


Transform typed text into spoken words with customizable voice settings. This app offers a modern interface, adjustable pitch and rate, and the ability to save favorite phrases. It's designed to be accessible and can even help users who have lost their ability to speak.


This app provides real-time, live transcriptions of phone calls, making communication easier for deaf and hard-of-hearing individuals. It offers visual voicemail, customizable interfaces, and is free for eligible US citizens.