União Fazendas is a real estate app that specializes in selling farms in Brazil, built by experienced web developer Welby G Stehling Andreatta using the no-code platform Bubble. The app enables users to search for and contact farms by various specifications, with features such as mapping and card-based results pages, while also providing sellers with a form to publish and advertise their farms for free. With over 25 years of experience in database-specific apps like ERPs and CRMs, Welby chose Bubble due to its ability to quickly build a fully functional MVP in no time, meeting the client's need for a startup-like business with a short timeframe. The app has seen success in its first month, with over 200 contact requests and phone calls, and plans to expand operations to other South American markets in the future.