Custom Formulas (binaryearth.customformulas) is a utility application designed for creating, managing, and executing complex calculations, offering features like a custom equation builder, formula categorization, and data export to CSV. Recent updates to the app include support for new functions, a web sharing hub for community formulas, and improved compatibility with modern Android SDK targets. The official, secure app is available on the Google Play Store and Apple App Store . Custom Formulas - Apps on Google Play