NavTex BT LE is a fully loaded package around the NavTex service. It requires the Nasa NavTex BT-3 receiver.
All information needed to work with NavTex is included in several databases including NavTex Station Broadcast Schedules and Frequencies and a lot more.
Drill down pop-ups will answer any question you may have about NavTex or certain station.
The Messages manager orders received messages already into the correct Message types categories. All you need to do is read them.
If you have an Apple Watch you can also opt to read new messages on the watch and use the iPhone only to download and manage messages.