Greasebook is a mobile app designed for small to mid-sized independent oil and gas operators to streamline their field operations. It offers features such as real-time production information, fast and accurate gauge sheets, and communication and collaboration tools for field workers. The app claims to generate a 6% lift in net profit margins, reduce downtime by 38%, reduce overhead expenses by 14%, and increase production by 4%. It has received positive reviews from clients and has been featured in various publications. Greasebook aims to provide a painless and complete field production management solution for its users.