How it works
Alternoo is a shared custody calendar for blended and separated families: it works out who is home which day, for each child, and shares it with everyone who needs it.
Create your calendar
A name, a school year, and it is ready. No account: you get a private edit link and a read-only link to share.
Describe your tribe
The parents (the tribe ones and the others), the children or siblings, and for each their rhythm: alternating weeks, 2/2/3, alternating weekends… with an anchor date.
Preload the school holidays
Belgium FWB, Flanders, France zones A/B/C: the official dates are added in one click per child and per year, and show as a yellow bar in the calendar.
Enter agreements and exceptions
Holiday agreements (Christmas, Easter, summer, even/odd years) replace the rhythm over a period. Manually added dates come first: only the days that contradict the rule are flagged as exceptions.
Subscribe your calendars
A subscription link (webcal/ics) for Google Calendar, iPhone, Mac, Outlook: the calendar updates itself. You can also install Alternoo on your phone like an app.
What you see every day
- One band per child, solid when they are with you, dashed when they are at the other parent's.
- An "Everyone" day when all the children are there, "No children" when none is, with the monthly counters.
- The yellow school holidays bar, different per school.
- ! The exception badge, only on the days that really change.
Frequently asked questions
Is a day a daytime or an evening? +
Alternoo thinks in evenings and nights: a day "with Arthur" means Arthur sleeps at home that night. It is the simplest convention for handovers after school, and to know who is there at dinner. Parents' commitments (Wednesday sport, a trip) follow the same logic: they hatch the evening, which no longer counts as "All together" or "No children".
Do I need an account? +
No. You create a calendar and get two private links: an edit link (for you) and a read-only link (for the other parent, grandparents, school). Just keep the edit link, or enter a recovery email in the settings to get it back if you lose it.
Which custody rhythms are supported? +
Alternating weeks (with or without a midweek day at the other parent's), 2/2/3, alternating weekends (Saturday-Sunday or Friday-Sunday, with or without Wednesday). Each child or group of siblings has its own rhythm, anchor date and two parents.
How do exceptions work? +
You add a date (a weekend at the seaside, a trip, a swap) for a child, saying who they are with. Alternoo compares with the rhythm or holiday agreement: only the days that contradict the rule are flagged as exceptions. You immediately see how many days really change.
Are school holidays included? +
Yes. The official calendars of Belgium (Wallonia-Brussels Federation, Flanders) and France (zones A, B, C) can be preloaded in one click in the settings, per child and per school year, then edited. Holiday agreements (Christmas, Easter, summer, even and odd years) are entered in the settings too.
Can I get it in Google Calendar, iPhone or Outlook? +
Yes, by subscription: a webcal/ics link is added to your calendar app and updates itself after every change. Events read All together, the first name of the child present, or No children.
Who can edit the calendar? +
Anyone with the edit link. The read-only link allows no change. Both links, as well as the calendar subscription link, can be regenerated at any time in the settings if you think they have been passed around.
Is my data private? +
A calendar is only reachable through its links. You can export all your data as JSON, import it into another calendar, and delete a calendar from the settings. No ads, no data resale.
Can I install it like an app? +
Yes. From your calendar page, use "Add to Home Screen" (iPhone, Android) or "Install" (Chrome, Edge): Alternoo then opens straight on your calendar, even with a flaky network.
Free, no account, no ads.