Fair question. You've watched a kid abandon at least one money tool already — the app she stopped opening, the book that's now under the bed.
Here's why this one tends to stick.
The first earned dollar happens fast. Project one is the lemonade stand. Most kids are holding real cash within ten days of the book showing up. We put the wins up front on purpose, because nothing else gets a kid to come back next Saturday.
She writes in it. The pricing math, the customer list, the $1,000 plan — that's all in her own handwriting. Twenty years from now you'll find this book in a box and the artifact will be her eight-year-old penmanship next to the number she actually hit.
The projects are weekend-sized. One Saturday, one project, one finished thing. Kids quit projects that never end. None of these end somewhere off in the future.
She keeps the money she earns. It isn't a parent-controlled allowance jar with educational pop-ups, and it isn't pretend dollars on a screen. It's the actual five-dollar bill the neighbor handed her, and what she does with it is up to her. Once she figures out the dollars are real and hers, she stops calling it homework.
Most kids aren't into money until they hold their first earned ten-dollar bill, and then they tend to be into it. We designed the whole book around the reluctant one — the kid who'd rather be playing.
And if she still won't engage after she actually does a project — not flips through it, does it — send the book back. That's what the No-First-Dollar guarantee is for.