The calendar nobody has to keep up
The shared calendar that fills itself in.
Creating a shared calendar is easy. Keeping it accurate is not. Three weeks in, it only holds the appointments of whoever set it up.
Written by Clément Fabiani
Why shared calendars go empty
Everyone has tried. You create a common calendar, you invite the family or the flatmates, and for a week it works. Then one person keeps entering things, the others forget, and the calendar becomes wrong, which is worse than empty because people still trust it.
The cause is always the same: typing things twice. The information already exists somewhere, in a chat, in an invitation, in a message, and it has to be copied across. Nobody keeps that extra step up for long.
What it does, and what it does not
Let us be clear straight away: Bob's calendar does not replace a work calendar. It does not sync with your company meetings and it is not meant to hold your individual appointments. If you simply want to share an existing Google Calendar, that is a different operation.
What it does, no general calendar does: it fills itself in from what the group is already organising. An event created, a loan with a return date, a favour promised, a contribution accepted: each becomes a line in the shared calendar, with nobody copying anything across.
What feeds the calendar
- Events and their replies: a birthday, a meal, a match, with the current headcount.
- Loans and their return date: the calendar shows when the item is due back, not only that it went out.
- Favours and help promised for a given day.
- Contributions from a shared list: what you agreed to bring appears on the day you have to bring it.
- Automatic reminders, a few days ahead.
None of those lines is typed twice. That is the difference between a calendar you maintain and a calendar that reflects.
Two of those entries have a page of their own: the shared shopping list that remembers market day, and the event planning and RSVP list that turns a date into a headcount.
Family, flatshare, couple, club
A family
Children's activities, birthdays, appointments nobody can miss. The most requested use, and the hardest to keep up by hand.
A flatshare
Who has people over this weekend, who does the shopping, who is away. Absences matter as much as presences.
A couple
Two separate work diaries and a shared life to fit between them.
A club
Call-ups, volunteer slots and kit taken out of the store, with their return dates.
Three habits that keep a shared calendar alive
- Only enter what involves more than one person. A shared calendar full of personal appointments becomes unreadable, and then nobody looks at it.
- Put the end time in. It is the most commonly missing piece, and the one that tells you whether anything else fits after.
- Let reminders go out on their own. A calendar that does not notify only serves to notice things afterwards.
European, free, and more than a calendar
Bob is published by SAS BOB BORROW & BACK, a French company, and the app is free on iOS and Android. The calendar is only one view: encrypted messaging, events, shared lists and loan tracking sit in the same place, and that is exactly what lets the calendar fill itself in.
What belongs in a family calendar
The most common reason a shared calendar stops being read is not that it is empty. It is that it is too full.
Belongs in it
Anything a second person needs to know: pick-ups, children's activities, visitors, absences, appointments with a shared journey.
Does not belong
Your own work meetings, reminders to yourself, anything that concerns nobody else.
Borderline
Late work days. Enter them as an absence, not as a meeting: the useful information is « not here », not « review call ».
The classic gap
School holidays and public holidays. They are written nowhere and raise questions every week.
Google Calendar, family organizer apps, Bob
The three approaches do not exclude each other, and it helps to know what each is built for.
- Google or Apple Calendar: good for sharing a calendar you already keep. Still requires everyone to type things in.
- Dedicated family organizer apps: friendlier and prettier, but the same principle, somebody has to enter everything.
- Bob: the calendar is the result, not the input. What the group organises appears there on its own.
If you only want one place to put appointments, a classic calendar does that well. If you are tired of entering everything twice, it does not.
Frequently asked questions
Does Bob's calendar replace Google Calendar?
No. It does not take your work appointments and it does not sync with a company calendar. It gathers what your group organises: events, loans, favours and reminders.
Do I have to enter events by hand?
No, and that is the whole point. An event created, a loan with a return date or a contribution accepted feed the calendar automatically.
Why do shared calendars end up empty?
Because they require typing things twice: the information already exists elsewhere and has to be copied across. After three weeks only one person is still doing it.
Is it suitable for a family?
It is the most common use: children's activities, birthdays, absences and shared appointments, with reminders going out on their own.
Can several people add dates?
Yes. Everyone adds, and everyone sees the same thing at the same moment.
Is the app free?
Yes, on iOS and Android, with no subscription.
Can I see it on a computer?
Yes, through Bob Web in a browser.
What belongs in a shared family calendar?
Anything a second person needs to know: pick-ups, activities, visitors, absences. Not your own work meetings, or it becomes unreadable.
How is it different from a family organizer app?
In those, somebody has to enter everything. In Bob the calendar is the result of what the group already organises.
Page updated on 17 September 2026.
