It is not mandatory for staff and clients to download the Qwil app on their devices. Qwil Messenger is available on any browser by navigating to https://web.qwil.io/
However, we strongly advise that user download the app as this will help them communicate more easily and meake sure they do not miss important messages.
Qwil Messenger's contact list is populated by the organisation that has invited them on the platform, this means Qwil will not access a user's personal contacts. Also, users may choose to share images or files, but this is on a case-by-case basis, and completely within their control.