Comparing and contrasting with the design principles

Let's put our phone in the airplane mode and do another quick evaluation against the principles with the same pass/fail scoring as before.

Give me uninterrupted access to the content I care about.

This is a pass. Besides maps, the entire app works as expected while offline. Thanks to PouchDB, even when we can't talk to the online database, our offline database works just fine.

Content is mutable. Don't let my online/offline status change that.

This is a pass. The content in our app is perfectly mutable, again thanks to PouchDB.

Error messages should not leave me guessing or unnecessarily worried.

This is a pass. In this chapter, we improved the error message that occurs when maps are not available.

Don't let me start something I can't finish.

This is a pass. You can still save changes to the to-do items while offline.

An app should never contradict itself. If a conflict exists, be honest about it.

This is a pass. Thanks to the improvements...