The good news that you don't need to download anything. The app is a progressive web app. This is much faster and lighter and you don't need to worry about downloading or updating anything.
Here is the process :
- Open the app in your favorite browser (our favorite is Chrome 😉)
- Click in the navigation bar
- Click on the rectangle with the arrow
- Scroll left until you find add to Home screen icon
- Choose a name
- Done, you can now enjoy all the capabilities of your mobile app