Group Text+ by Contrast, the creators of Launch Center Pro and Perfect Weather, is a popular app that can assist users to easily and quickly compose and send messages including images, and text snippets, location, etc, to people using iMessage and SMS. You can also take advantage of the Share Extension function to send contents from the Web or within any app on iOS with a share button with your groups, simply by tapping on the avatar that represents the group or contact you want to send the message to. It is a super handy app if you want to communicate with many groups of people frequently and quickly disseminate the information you want to share with them.
I have put this app into my wishlist since it launched and now it is currently free for a limited time on the App Store.
You can take a look at the video before and see the power of Group Text+:
You can also download their other app called Email+ on the App Store for $2.99.