NATHAN BARRY is a designer, developer, speaker, and the author of three highly profitable books. He is the founder of Legend, his software design and consulting company. He is an authentic innovator in the world of digital publishing and blogging. His primary goal is to help other authors make a living from their writing. Nathan lives in Boise, Idaho and loves to travel with his wife and son. Follow Nathan's personal and business adventures on Twitter (@nathanbarry).
"All of this is to say that designers should learn to program, and programmers should learn to design."
The book is largely for developers who can't design.
After reading Tapworthy, I realize there's a lot less effort in writing this.
Warning: do not clone an existing app as suggested by the book and give it a new name! Even if it has a better interface. That will not work anymore. The Apple store rejects apps that clones popular apps.
It's simple and straight to the point. Which is good.
For me, it all comes down to this: "Remember that it isn’t about the technology or features of your application, but instead what your app allows a person to do and most importantly how it makes them feel while using it."