This book explores the new product development process of firms developing frugal innovation for the base-of-the-pyramid (BOP) markets in developing countries. Frugal innovations are products characterised by an affordable price-point, durability, usability and core functionalities that are highly adapted to BOP consumers’ needs. Frugal products have the potential to drive the development progress and living standards of low-income consumers. With an innovation framework developed from worldwide frugal case studies, this book provides detailed insights through two in-depth start-up firms in Indonesia that have successfully launched frugal products for the low-income market. These two start-ups have addressed two major development challenges for not just Indonesia, but also the global BOP market – traditional methods of cooking and access to clean drinking water. A detailed roadmap is developed from insights into the processes and management decisions of these two start-ups and combined with previous studies on frugal products. Providing a detailed roadmap across the different phases and stages of the new product development process when developing frugal products, this book will be insightful to not only innovators but also investors and government agencies supporting their activities.