Gives a clear picture of how your ideas and proposed features will fuse together into a functional app.
Gives an opportunity to evaluate design concepts, gather feedback, and identify dead links and flaws in the flow and usability of the app.
The designer architects the interaction between design elements, and builds the look and feel of the app.
Involves a number of steps each involving a chunk of functionality incorporated in the app.
Starts as soon as the first feature is implemented. Test ,and test again to sniff out and correct any technical flaws.
A checklist is prepared for the launch as each app store has different policies for the release.