Still today, 10 months later, this is one of the least stable and least-performing professionally-developed apps I've used, surprising from Trion. It often takes longer to load the Lootables list than my screen lock timeout (even over wifi), so I have to periodically touch the screen to keep it from locking. Sometimes the lootable window will be overlaid twice, so you have to scratch and dismiss it twice. Sometimes it just goes black and you have to know where the scratch areas / dismiss button are and touch that area. Sometimes it just freezes and you can't do anything.
All of the problems of the app seem to center around being unfamiliar with the android platform. The actual interaction with Rift has always worked as long as the app itself wasn't locked up.
Additionally, I would like the app to notify me when someone says my character name in guild chat or maybe a special tag like @MyName.