The Amenitiz App is only available from iOS 10+
First, on your mobile just go to your App store.
Once you there, type "Amenitiz" and it should appear in your research results. Click on Install.
Once the download is over, the app should appear in your Home Screen. Click on the Icon and you will be able to connect yourself as you usually do on your laptop!
The article concerns Apple users, we have one other article for Android users.