Install the Healium app from the Apple app store.

Step 1: Open the App Store
Look for the blue App Store icon on your home screen and tap it to open.Step 2: Browse or Search for Healium
Tap on the "Search" tab at the bottom right and type the name of the app you're looking for (Healium) in the search bar.
Step 3: Select the App
Once you find the Healium app, tap its icon to open its details page.Step 4: Download the App
You will see a button that says "Get." Tap it.
You may need to authenticate the download using your Apple ID password, Face ID, or Touch ID. The app will begin downloading after your authentication.
While the app is downloading, you will see a loading circle icon. Once the download is complete, an "Open" button will appear.