Earn them
A job can be worth 0 to 10 Duck Bucks, set by a grown-up. Finishing a book can pay too, and the arcade mints a weekly award.
Duck Bucks are earned by doing: a grown-up says what a job is worth, and whoever finishes it collects. They are spent in the duck builder, and never bought.

A job can be worth 0 to 10 Duck Bucks, set by a grown-up. Finishing a book can pay too, and the arcade mints a weekly award.
An eight-week grid of days. Tap a day and it lists the actual jobs you did, with the time and what each paid.
Hats, glasses and the rest in the duck builder, ten Duck Bucks a piece. Every colour is free.
Untick a job and the Duck Bucks go back, cancelled at the credit rather than shown as a minus later. A day you unchecked something is not a day you went backwards.
The leaderboard names today’s top duck by tasks finished, so two small jobs beat one big one and a small child can win a day. It says nothing about anyone else.
A grown-up can turn on the Exchange and say what Duck Bucks are worth at home. A child asks, a grown-up says yes or not this time, and the app keeps a note of what you agreed.
Every state of the Exchange says so plainly: this is a note of what you agreed, and a grown-up hands it over at home.
Duck Bucks exist to make a small effort feel like something.
A grown-up can make a job worth one to ten Duck Bucks, and whoever finishes it collects them. They are spent in the duck builder on hats, glasses and the like; every colour is free. Duck Bucks are earned, never bought, and there is nothing to purchase anywhere a child can reach. If you like, a grown-up can turn on the Exchange and say what Duck Bucks are worth at home; the app keeps a note of what you agreed and never moves any money.
Fourteen days free, with nothing held back, then $4.99 CAD a month or $45.99 CAD a year. That is one subscription for your whole household and every feature in the app: there is no higher tier and nothing kept back to sell you later. Cancel any time in a couple of taps.
Create your household, add your people and choose your ducks. Everything for a fortnight, then one subscription covers your whole flock.