Continuing the discussion from Synchronizing notes over CalDAV as vjournal format?:
@patrickunterwegs is the dev of this cool app!
jtx Board, an Android app that supports VTODO and VJOURNAL without making major compromises. Synchronization is done over DAVx5 and Nextcloud already fully supports it (there is no web interface for VJOURNAL though). However, you can check it out here:
Btw. it’s open source, it’s available on app stores but also on f-Droid. So I hope it’s okay to also promote it here.