According to lean development principles, developing a mobile application is a process that includes a sequence of phases -- design, development, release, feedback collection, modification to redesign, and so on -- with the aim of ensuring the successful development of an app at a minimal cost. User feedback is an indispensable part of the product life cycle and the basis to determine its evolution.
As Brian Harry, Microsoft Technical Fellow pointed out in his article on The Importance of Feedback in Software Development:
Feedback helps you sort out your understanding of yourself. It helps you see the world from a new Angle, correct the deviated direction and learn better. Besides, feedback makes you yourself more outstanding and your work better. Whether you follow a particular agile development practice or not, the early and frequent feedback is one of the important factors that make you more successful...
https://www.infoq.com/articles/effectively-collect-user-feedback-mobile-apps/
