Achieving UI design which has great user experience is not a one time job and requires continuous analysis and design changes. In user Experience there is no right or wrong approach, this is something which can only be decided by the analytics and number captured from user's activity. We follow the above approach to continuously improve the user Experience until the desired results are achieved.
“User Experience Design (UXD or UED) is the process of enhancing user satisfaction with a product by improving the usability, accessibility, and pleasure provided in the interaction with the product.” — Wikipedia
“The next big thing is the one that makes the last big thing usable.” — Blake Ross, Co-creator of Mozilla Firefox
“If you think good design is expensive, you should look at the cost of bad design.” — Dr. Ralf Speth, CEO of Jaguar Land Rover
“When you ask creative people how they did something, they feel a little guilty because they didn’t really do it, the just saw something. It seemed obvious to them after a while.” — Steve Jobs
“[The design process] is about designing and prototyping and making. When you separate those, I think the final result suffers.” — Jony Ive, Chief Design Officer of Apple Inc.