To download the Rumble app on your device, start by visiting rumble.com/app in your browser. This page provides links to download the app for various devices, including iOS and Android. For iOS devices, tap the link to the App Store, where you can install Rumble directly. For Android users, select the link to Google Play, then download and install the app. Once installed, open the app, sign in, and explore trending videos, subscribe to channels, and upload your content. Enjoy sharing and watching videos on Rumble with ease!