As far as I see CryptPad doesn't allow for editing files offline. In order for files to be used outside the CryptaPad context they would need to be exported and downloaded first. The editing software is only CryptPad in the browser. However, it has the collaboration feature going for it. It's a stro...

So, I gave CryptPad a try ... and as with so many office suites it majorly struggles with text input on mobile. For example, the on-screen keyboard randomly disappears and doesn't come back. You need to close and reopen the tab constantly. CryptPad's text editor in the browser is based on OnlyOffice...