How does someone join?
The owner types their email address. They get an invite, and they are part of the nagging once they accept.
The medicine, the school run, the bins. Ok Donkey shares one reminder between the people who could do it, nags one of them first, and closes it for everyone with one tap.
A reminder belongs to its owner, and the owner invites the others by email. Someone is added to the nagging only after they accept. Until then they see just the title, the schedule and who owns it, and nothing else.

Pick the same person every time, take turns, whoever usually finishes first, or a different person each day. A weekday rota lets you give Mondays to one person and weekends to another.

The others are alerted after a grace window of 6 to 20 minutes, depending on how often it rings. One Done from anyone stops the alarm on every phone. On Android it stops even with the app closed.
After three Done taps, a reminder shows who usually finishes and how fast, such as “Jamie usually finishes in 4 min · you in 12 min”. It is information, not a score.

An event is the sharing boundary. People on it see the title, the schedule, the photo and who finished or skipped it. People on other events see nothing of it. This is enforced in the database, not just in the app.
Each person sees the time on their own clock. On holiday, you can leave your turns to others for 3 days, 1 week, 2 weeks or a date up to 90 days away. Smart Timezones has every case.

Every past time keeps a read-only log: when it rang on each phone, a snooze, and who marked it done. An optional weekly email on Monday lists what was done, missed and skipped.

The owner types their email address. They get an invite, and they are part of the nagging once they accept.
Yes. Make them the first person, or put them on a rota, and add yourself as the backup.
Only what is on the events they share. Invited but not yet accepted people see the title, the schedule and the owner only.
Deleting an account removes the events it owns. Their Done and Skip marks on other people’s events stay, shown as “Deleted account”.
Ok Donkey is free, with no adverts and no tracking. Set one reminder, share it with one person, and see how it goes.
Ok Donkey is not a medical device and gives no medical advice. A missed alert can still happen. Do not use it as the only reminder where a miss could cause harm.