The Harry Potter Fan Club app is available on Android and iOS smartphones. It is not available on tablet devices.
The app is currently available in the UK, US, Australia, Austria, Belgium, Brazil, Canada, Denmark, Finland, France, Germany, India, Indonesia, Ireland, Italy, Malaysia, Mexico, The Netherlands, New Zealand, Norway, The Philippines, Portugal, Singapore, South Africa, Spain, Sweden and Switzerland only and will therefore not show in the App Store or on Google Play if you reside outside of these regions.
In the App Store and on Google Play it is called ‘Harry Potter Fan Club’.