Background: Blood donation rates in Saudi Arabia are relatively low compared to other countries. Understanding the patterns and characteristics of blood donors is crucial for improving donation rates and ensuring a sustainable blood supply. This Study utilizes data from the Wateen App to examine blood donation patterns in Saudi Arabia.Methods: A cross-sectional study was conducted using data from individuals who registered on the Wateen App. The Study analyzed demographic information, donation frequency, blood group distribution, regional variations, temporal trends, and user satisfaction with the App. Statistical analyses were performed to identify significant findings.Results: The Study found that the majority of registered donors were male, with a higher proportion in the 25-35 age group. Most donors had donated once, while a small percentage had multiple donations. O+ blood group donors constituted the most significant proportion, followed by A+ and B+. The Eastern province had the highest incidence of registered donors. Over the years, there has been a gradual increase in the number of donors. There was no significant correlation between donation numbers and different months, seasons, or Ramadan.Conclusion: This Study provides insights into blood donation patterns in Saudi Arabia. Efforts should be made to address gender disparities, engage a wider age range of donors, promote donations among individuals with less common blood types, and improve donation infrastructure in regions with lower donation rates. The Wateen App has shown positive outcomes in enhancing donor engagement. Further research and collaborative efforts are necessary to improve the blood donation system in Saudi Arabia.