We'll need a pair of packages: the basic Reactotron one, along with reactotron-redux to help with Redux. Install them with the following command:
npm install reactotron-react-native reactotron-redux --save-dev
Reactotron can work with redux-sagas instead of redux-thunk, and even with MobX, instead of Redux. Read more about this at https://github.com/infinitered/reactotron.
You'll also require the native executable tool that connects to your app. Go to the releases page at https://github.com/infinitered/reactotron/releases and get the package that matches your environment: in my particular case, I just downloaded and unzipped the Reactotron-linux-x64.zip file. For macOS users, there is another possibility: check out https://github.com/infinitered/reactotron/blob/master/docs/installing.md.
After installing all of this, we are ready to prepare our app; let's do so now!