Today, Net Promoter Scores (NPS) are an essential tool for product management, used by two-thirds of Fortune 1000 companies and Instabug's most popular user feedback feature. NPS is a simple yet effective survey that asks how likely users are to recommend a brand to a friend on a scale of 0-10. This score can be correlated with company growth and is measured by subtracting the percentage of Detractors from the percentage of Promoters. A score above zero indicates more Promoters than Detractors, while scores below zero indicate more Detractors than Promoters. NPS has proven to be a highly effective indicator of customer loyalty and future sales, with Promoters being 92% more likely to make repeat purchases than Detractors. The Net Promoter System was introduced by Frederick Reichheld in 2003 and has since become a standard across industries. To use NPS surveys effectively, companies should focus on asking simple questions that can be answered quickly, such as the standard NPS question and a follow-up question to understand the primary reason for the score. By analyzing NPS results and addressing customer concerns, companies can improve their mobile app and increase customer loyalty.