Anyone you share with signs in with their own account and sees the same log — the same running sleep, the same history. Either of you can add, correct and delete entries.
One grant per person, for the household rather than for one app: the same people also see the shopping list, and revoking here takes both away.
The account has to be created in the Firebase console first — this page cannot create it. Adding the address here is safe either way: the access is simply waiting when the account appears.
Anyone you share with signs in with their own account and sees the same log — the same running sleep, the same history. Either of you can add, correct and delete entries.
One grant per person, for the household rather than for one app: the same people also see the shopping list, and revoking here takes both away.
The account has to be created in the Firebase console first — this page cannot create it. Adding the address here is safe either way: the access is simply waiting when the account appears.