Flowfy

Alberto Perez is a 22-year-old mechanical engineer from Spain pursuing a masters in Data Science. Before Rork, he spent three years doing organic dropshipping across seven Shopify stores (over $20K combined revenue) and building an audience through relentless content creation. Five months before the May 2026 case study, he discovered Rork via a YouTube video, built Flowfy -- a personal finance app for expense tracking, budgets, and spending visualization with a pastel, feminine aesthetic aimed at young women -- in a couple of days with zero coding experience, and published it to the App Store. Flowfy launched November 11, monetization went live December 5, and the first 30 days did $10K. By the case study it had 100K+ downloads, $22K total revenue, $300+/day (peaks $600+), ranked #3 in Finance in Spain, all organic with zero ad spend.