User settings and user data are a vital part of any application and the storage. The user needs to be handle it with care. Data persistence is becoming a much bigger topic now than it was a few years back, and while the objective of using a common language across all platforms has meant that it is possible to have a commonality when it comes to creating some form of persistent system, as you have seen in this chapter, it is far from a simple task.

In the next chapter, we will cover all of the aspects that we looked at until now in one application.