KASSIX POS

A simple point of sale for small businesses that runs in the browser of any computer, tablet, or phone, and as an iPhone app on the App Store. Ring up sales at a fast register, keep stock accurate, look up any past sale with its receipt, and see revenue and profit at a glance. New shops get 60 days free; after that, KASSIX Pro is ₱149 a month. Each store’s data is private to its own account. An Android app is on its way to Google Play.

Problem

A small shop needs to know what sold, what’s left in stock, and what it actually earned, but a notebook or spreadsheet never quite adds up.

Solution

A register-first web app on Next.js and Supabase. Every sale runs through one Postgres function in a single transaction: it locks the products, rejects anything out of stock, computes prices, tax, and totals on the server, and logs each stock movement. Row Level Security keeps every store’s data private, and sold items keep their original names and prices, so history never changes. The iPhone app is a SwiftUI shell around the same site that adds what a bare web view can’t: AirPrint receipts and CSV exports to the share sheet.

My Role

Concept, product design, and development.