Make earning, saving and waiting tangible.

Pocket money gives children a small, practical way to learn about earning and saving. GrowthJar makes that experience visible: coins, a jar and modelled growth give a child something tangible to follow when they choose to wait.

The product records a family’s agreement. It does not hold money or offer an investment service. That distinction shapes the language, the interactions and the separate responsibilities for a child and a parent.

The native iPhone app pairs its child experience with a parent area for jobs, approvals, child profiles and records. Parents can set rates and durations, review balances and record money handed over. The design has to make those everyday details understandable without turning the child’s experience into an accounting screen.

SwiftUI supplies the native presentation and SwiftData the on-device models. The product also includes an optional family unlock through StoreKit, with purchases kept in the parent journey.

The free-one-child and paid-family structure, support content and sharing plans are part of the product’s commercial design. They connect what a family first tries with the reason it might choose to use GrowthJar more widely.

GrowthJar is supporting evidence of BTR’s product and commercial engineering. It is not presented as an agentic service; its place here is the practical connection between useful software, clear responsibilities and an understandable offer.