@MediaActivist hello! Sadly as a small team funded by donations and public research grants, we haven't been able to secure funding for developing mobile applications for CryptPad yet!
Due to our complex end-to-end encryption and collaboration model it's not an easy thing to do and will require an extensive, stable and secure API prior to developing such mobile applications.
While we would like to do it, we'd need a third party to chime in and fund this huge amount of work.