The Net Promoter Score (NPS) survey is a widely-used tool for gauging customer loyalty, particularly in mobile apps, by asking users how likely they are to recommend the app to others and seeking feedback on improvements. This simple yet strategic survey provides both quantitative and qualitative data, allowing companies to understand user satisfaction and loyalty better. The NPS score is calculated by subtracting the percentage of Detractors from Promoters, with scores above zero considered good and above 70 exceptional. The survey's strength lies in its ability to capture user sentiment and uncover actionable insights for product improvement. It emphasizes the importance of interpreting both numerical scores and open-ended responses to identify areas for enhancement and foster user loyalty. Using platforms like Luciq can streamline the process by automating score calculations, segmenting users for targeted surveys, and facilitating follow-up actions to close the feedback loop. Understanding industry benchmarks can contextualize NPS scores, but a comprehensive analysis should consider various factors to ensure meaningful comparisons and improvements.