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.

“130K downloads doesn't happen overnight. Behind that number there are rejected apps, videos that flopped, weeks of testing formats that went nowhere, and a lot of moments where quitting felt like the smart option.”