PTT technology has kind of fallen by the wayside, but the need for quick and easy voice communication hasn't. Enter to one or more recipients. (That link is for the iOS version; .)

When you tap and hold the Talk button, you can record a message of up to 30 seconds. When you're done, the message is immediately delivered to the selected recipients.

Think how incredibly handy that would be for, say, notifying a sales team of an upcoming meeting, or letting your employees know about a new promotion. Sure, you could accomplish the same thing with an e-mail or text message, but your voice can convey a lot more than just raw text. Plus, sometimes it's way more convenient to say what's on your mind than it is to type it.

If there's a catch to using HeyTell, it's that everyone in your circle must have the app on their Android phone or iPhone. (For any contact who doesn't have it, you can send an invitation via e-mail or text.) But once it's installed, it alerts users via push notification when a new message arrives, just like with a text message.

What's more, you can add your location to outbound messages, which is great if you're trying to get a group to convene at a certain spot. ("Lunch meeting today at Chotchkie's on Lexington.")