It is Wednesday, she is at her dad's this week, and the same small question shows up every Wednesday at four. She taps I'm here when she gets there and both phones buzz at the same moment. Nobody has to text the other parent to ask.

Sofia's week is at Dad's. She taps I'm here when she gets there and both parents' phones buzz at the same moment.

You are both owners. Same calendar, same alerts, same view of the week. Neither of you has to ask the other one for information about your own kid.

A code and a four-digit PIN on whatever phone they have. No email address, no phone number, nothing about a child we do not need. One button that says I'm here.

Add the grandparent who does Thursday pickup. They tap Got them and both parents know, without either of you being the one who has to relay it.

Put the pickup on the calendar and whoever is doing it gets the reminder. If nobody taps by ten minutes after, both parents get pinged. That is the part that stops the phone calls.
The 14-day free trial is on the monthly plan and needs no card. Cancel any time and you keep the plan through the day you have paid for.
This is the Family plan. Same app, same price, whatever you use it for.
No. It shows where your child said they arrived, at the moment they tapped. It shows nothing about either parent's location, ever, and there is no map or trail for anybody.
Yes. The Family plan has two co-owner parents with equal rights. Neither of you can be locked out by the other, and neither needs the other's permission to add an event.
Turn chat off. The check-ins, the calendar and the alerts all keep working. Plenty of families use it precisely so they do not have to talk to coordinate.
You can put the schedule on the calendar as repeating events so both houses see the same thing. It is not a legal record and it does not report to anybody.
$3.99 a month, or $39 a year, for up to nine people. That covers both parents, the kids, and grandma. There is no second subscription for the other house.
One kid, two houses. She taps I'm here and both parents know at the same moment, so nobody has to text the other one to ask. Shared calendar, pickup reminders, no-show alerts. $3.99 a month.