The child keeps a small shop. Ring the bell and one of twenty friends strolls in and holds up an order — three apples as three apple pictures with a numeral 3. An order that needs no reading. The small number word under the numeral is there for the grown-up sitting beside them to say out loud.
The child counts goods off the shelves into the basket and hands it over. The app never counts for them. No highlighting one by one, no counting aloud. When the count matches, the customer is delighted — and a friend who bought food eats it on the way out.
And when it doesn't match? The customer peeks into the basket, giggles, and holds the order up again. No buzzer, no red X, no frown. A wrong count is how counting is learned. Handing over is always allowed, and always allowed again.
Orders start at one of something and drift upward quietly — counts to five, then to ten. And once five is comfortable, two-part orders like "2 apples and 3 strawberries" start mixing in, which is addition met sideways. If it gets hard, it gently backs off on its own. Nowhere in the app does a number measure the child.
Between customers, the shop is the child's. Rearrange the shelves, line all the fruit up front, keep a shop where the teddy bear is not for sale — anything in the box stops being asked for. The shop stays exactly how they left it.
The bellThe next customer comes when the child rings for one, and never before. No queue, no rush.
A good on the shelfWith a customer at the counter, a tap counts one into the basket. With the shop quiet, a tap picks it up — put it down on another shelf, or in the box.
The basketEverything in it stays visible, one by one, so it can be counted again. Tap an item to put it back.
Hand it overGives the basket to the customer. Always allowed — nothing checks the basket until the child offers it.
The storeroom boxWhatever goes in the box is not for sale, and orders stop asking for it. It holds up to six.