How I Built 7 Shopify Apps as a Solo Developer in Ireland

A 47-year-old former jewellery retailer in Cork, Ireland, leveraged 22 years of hands-on retail experience to build seven Shopify apps as a solo developer after closing his business. Each app—including SmartCash for cashflow forecasting, Jewel Value for insurance valuations, and RepairDesk for repair tracking—was born from real pain points he encountered running a multi-site jewellery operation. His software practice, JMS Dev Lab, focuses on solving problems that existing tools either ignored or priced out of reach for small retailers.