Today, Facebook updated its Messenger app for both iOS and Android, adding a voice messaging capability to the app on both platforms.

There have also been reports that Facebook has been rolling out a pilot VOIP feature to the Messenger app, which will let users call other Facebook Messenger friends for free, or at least without incurring carrier voice minute debits.

The VOIP option is not available for all users, as the iOS app is the only one with even a mention of the feature in the app description. TechCrunch reported that the pilot program is only available in Canada for now, as well.

Facebook continues to update and improve upon its Messenger app for both iOS and Android, not even requiring a Facebook account to use the app, letting users sign up for the app with only a phone number and their name. There’s also a Firefox extension that will let you use the Messenger service without having Facebook up in a web browser.

From the iTunes description:

What’s New in Version 2.1
– Send a quick voice message when you have more to say
– Call friends for free right from Messenger*
– Other improvements and bug fixes

*Free calling uses your existing data plan, and will be rolling out over the next few weeks.

From the Google Play Store

What’s New in Version 2.2.4
– Send a quick voice message when you have more to say
– Other improvements and bug fixes

• SourceTech Crunch
• ViaElectronista