Kids' clothes swap

Stage 1 of 5

Validate

Is this a real problem for a customer you can reach, who wants it solved?

What the founder did: talked to 12 parents at two schools, then ran a test: a swap table at one school's Friday pickup. 23 families brought 41 bags, and 19 of them took clothes home. Asked about an app, 9 of 12 said they'd use one if their own school's parents were on it, but only 2 would swap with strangers across the city.

What the guide flagged: a city-wide swap app has to fill both sides at once, and Vinted, Facebook Marketplace and op shops already serve strangers swapping clothes. The founder couldn't name the first 50 users of a city-wide app, but could name 50 at one school. That became the starting point: a closed group that already trusts each other and meets twice a day.

Why Go: the swap table proved supply and demand in a single afternoon, at a school where the founder already knows the parents. The narrowed version doesn't need strangers, shipping or ratings. Weak spot noted: it grows one school at a time, and every school needs a parent willing to run the table.

Stage 2 of 5

Define

What's the smallest thing you can build that proves value?

What got cut: the first list had 9 features: city-wide browsing, shipping, ratings, photos of every item, chat, a points shop, school rankings, donations and family credit. Kept: each family's credit balance, a list of the sizes each family needs, and a text when a matching bag comes in. The clothes stay on the physical table, not in the app.

Why Go: three features turn a one-off swap table into something that runs every month without the founder keeping a notebook. The target is 30 families swapping at least twice by the end of term. Everything that was cut assumes strangers, which this version doesn't need.

Stage 3 of 5

Build

Can you build it with AI tools without losing control?

Build path chosen: an AI app builder with text messages, no custom code. A spreadsheet form was the first idea, and it would have handled credit, but it couldn't send the "your size just came in" text, which is the part parents said they wanted. The builder plan and texts come to about A$35 a month.

What the guide flagged: the app holds children's ages and sizes and parents' phone numbers. The guide flagged keeping it to what the swap needs: no children's names, no photos of children, and parents can delete their family's record themselves. Those went in as the first milestone, not the last.