In this podcast, Thomas Domville gives us a walk-through and demonstration of Roger - Talk More Often--a free, walkie-talkie-style messaging app for iOS devices.
According to the App Store, Roger's features include:
A free walkie-talkie-style app available worldwide.
Talk for as long as you want, as much as you want.
Designed for voice communication.
Easy to use—one tap to listen, one tap to reply.
Replay for up to 48 hours.
With Glimpses, see weather and time of day based on someone’s location.
See status when people have listened.
Works with anyone, even if they don’t have the app yet.
You can talk offline too.
High-quality audio that won’t eat up your data (it’s less than viewing a photo online).
3D Touch—Talk to your favorite people without opening the app.
The developers of Roger have made accessibility a priority, and there is an ongoing discussion about the app in the AppleVis Forum.