Solutions.
We watched real families shop before we designed a single screen. We followed parents and kids during actual shopping trips. What we saw changed the way the app moves people from browsing to the cart. It also changed how the categories sit on the home screen.
We wrote the iOS app in Swift. We wrote the Android app in Kotlin. We did not use a shared codebase. Swipes, animations, small buzzes and checkout all feel the way each phone expects. People stay with retail apps that feel polished, so we paid for the polish.
The feed learns in the first two weeks. It reads what parents pick (budget, brand, size) and what kids do (look longer, tap twice, skip). Careful backend development lets the store team read the same data to plan the next drop.
We launched with no surprises. Two rounds of beta testing with 40 families found what in-house testing always misses. Tap targets were too small for younger kids. The return flow confused people. One notification went off at bedtime. We fixed all of it before launch day.