How do you keep breakdown, schedule and call sheet in sync on small shoots?

Hi, I'm Sabatino, an independent filmmaker based in Italy. I'm building SABBA, which launches here on Saturday.

Before launch day I'd like to understand one practical handoff: when the crew works across separate documents and chats, how do you keep breakdown details, the shooting schedule and the call sheet in sync? What gets re-entered, and what goes out of date first?

SABBA is free during testing, by invitation. I built it, so I'm not neutral; I'm more interested in hearing where your workflow breaks than in pitching it.

One-minute demo in English: https://www.sabbaproductions.com...