this came by email
Votre logiciel est vraiment agréable à utiliser sur Mac. Est-ce qu’il y moyen d’interagir avec sur iPad et iPhone ?
Translation by Google Translate:
Your software is really fun to use on Mac. Is there a way to interact with it on iPad and iPhone?
Please consider writing in English for better understanding.
There is no Java Runtime for iOS, so there is no GanttProject on iOS, sorry.