This is a custom app for a counselor to allow their clients to practice relaxation breathing at home. The app was originally built using Corona SDK which enabled the app to be built for iOS and Android from one set of source. Corona SDK uses the Lua scripting language for its source, and then compiles it to native format for releasing on various platforms.
When Corona SDK stopped publishing updates, the app was re-written from scratch using JavaScript, React Native, and the Expo framework. Once again, this enabled one set of source code to be compiled natively for iOS and Android.
UPDATE: This app is no longer available for download.