@boanosa I also tried downloading the grow data but wasn't successful.
From what I've seen, the Django app (gro_api) is configured to use an SQLite database. The problem is that the file that contains this database has 0 bytes and when I open it, it's empty (or at least I couldn't the find the data in it).
It could be that it always loads initial fixtures at start up for it to run, but it also stores at least some information. When you reboot it, some data is kept, like the plants you sowed or harvested, recipe runs, etc.
I haven't looked into this app thoroughly, but this information is there.
It would be nice if someone had already studied it and could tell us, but I'm not sure if this is the case.