Flutter is an easy-to-use application for the iPhone that lets you send unlimited picture messages to any mobile phone number in your contact book. You can also attach your location to let friends know where you are.

With Flutter, you can quickly compose a message and attach a picture from your iPhone album, or take a new photo. There's also an option to easily attach your location. You can add recipients directly from your contact book.

Flutter sends recipients a text message with a link to view your message on their web-enabled phone. If you attached your location, a convenient button shows where you sent the message from on Google Maps.

Only recipients see your messages. Mobile phone numbers are only used to deliver messages and Flutter doesn't store your contacts' info.

There is a small, one-time fee of $1.99 in the U.S. to download from the iTunes App Store. But sending unlimited picture and/or location messages are FREE because they're sent via Wi-Fi or your existing data connection. There are no hidden costs.