So! I've not actually posted about this, but I've launched a small iOS app GW2 Assistant.
Since then, we've had some issues with the local cache never clearing and the app not updating data. Because of those issues and the fact that Ionic 3 is hitting beta shelves, I'm in the process of completely rewriting the whole thing. This time, we're using redux to pass information around and persist - and leveraging some of the new quirks of Ionic 3 to hopefully tamp down on some of the issues.