Karage Kash
Karage Kash is an iPadOS point of sale for car-service stores: the cashier rings up services, builds the cart and issues the invoice from one screen. Version one existed; I led version two, rebuilt in about three months and shipped in 2025. It is in production use.
- Swift
- SwiftUI
- iPadOS
- ASP.NET
- REST API
- Epson
- My part
- Version two
- When
- 2025
- Build time
- About three months
- Status
- On the App Store
Overview
An iPadOS point-of-sale app for car-service stores. The cashier rings up services, builds the cart and issues the invoice, all from a single, always-visible screen built for speed and reliability at the counter.
My role
A v1 already existed; I came in and built v2, restructuring it for cleaner code, a new design, faster launch and load times, and a better UI/UX with new features. Another developer later joined on smaller features; I led the team and managed the GitHub repo.
LimitVersion one existed before me. Epson printing was integrated with a teammate, and another developer joined later on smaller features.
What shipped
- Rebuilt the app end to end for v2: architecture, design and performance.
- Cart and checkout for day-to-day car-service sales.
- Invoice creation and receipts from a single screen.
- Receipt printing via Epson printers (integrated with a teammate).
- Faster launch and load times, and a refreshed UI/UX over v1.
Worth a closer look
The hardest part was keeping the whole flow on one screen. Building an invoice and cart is a long, multi-step process, so I designed it to stay on a single page the entire time: the cashier never loses context mid-sale.
DecisionKeep the whole flow on a single screen, so the cashier never loses context mid-sale.