All official releases and trusted distribution channels for the app and technical documentation — centralized in one place. Choose your preferred channel.
Fetch the Android build straight from the Kara server — the fastest, most direct distribution channel.
Download APK
Official verified listing on Google Play with automatic updates and Play Protect security.
Open Google Play
Get the latest release from the official Telegram channel post — with full release notes.
Open in Telegram
A Progressive Web App build tailored for iOS users is currently in development and will be released shortly.
Available Soon
Complete technical documentation covering calculation references, engineering formulas (Darcy-Weisbach, Huebscher) and the operating guide for every computation engine in the app.
Download PDF