To download the Rummy 365 app, visit the official website or your device's app store. For Android users, go to the Google Play Store, search for 'Rummy 365,' and click 'Install.' For iOS users, open the App Store, search for 'Rummy 365,' and tap 'Get.' Ensure your device meets the app's requirements for optimal performance. Once installed, open the app, create an account or log in, and start enjoying the game. Downloading from official sources ensures security and the latest updates, enhancing your gaming experience.