I am very surprised that Mozilla has no calendar application (whether built into thunderbird, like the desktop app, or separate) on mobile available.
As more and more people are moving to FOSS solutions I believe that a calendar app supporting Events Notifications and Tasks through CalDAV would be amazing!
I would really much like it if lightning could be added. It has become my main calendar client on desktop and I can't seemed to be satisfied with any calendar apps on mobile (Google calendar do the tricks but I'd like a FOSS oriented calendar)
Yeah, actually if I can have my own calendar that synchs through my Mozilla account with the desktop that would be optimal. I could get rid off my Outlook.com calendar, which I currently use to sync with my phone, laptop and desktop.