What is MathTerms? Here is the description from the Apple App Store.
MathTerms is an illustrated glossary of mathematics terms in English and Spanish. The free iOS app includes almost 500 entries for middle- and high-school mathematical concepts. To help learners master speaking as well as reading, it encompasses audio pronunciations of terms, by English and Spanish native speakers. A flash-card quiz game is included, enabling students to study selected terms in an interactive environment.
Apple recently introduced its SwiftUI framework that is a tool to build user interfaces with a declarative Swift syntax. You can simply drag and drop widgets and then add logic via the Swift programming language. I decided to revisit my old MathTerms app as a good way to learn about this new framework and make MathTerms available again.
You can learn more about the app using the MathTerm menus at the top of this page.