The Messages app is one of the most heavily used apps on my iPhone and iPad. That's as critical to my workflow (if not more so) than email is. I love the quick nature of sending and receiving messages. The problem that most people have with Messages, however, is that it seems to always take "forever" (obviously time is relative) to switch to the Messages app, type a reply, send it, then switch back to what they were doing.
For those that fall into that category, I have great news for you! You can actually reply almost instantaneously right from whatever app you are currently in. It's simple and very effective. Here's how it works.
In this example, I am watching a trailer for "Furious 7". While I'm watching the trailer, I happen to receive a text from my son who needs help with something. I obviously don't want to blow him off, but I also don't want to stop what I'm doing.
Pretty slick, huh? I didn't miss a beat! When a message arrives, simply tap and pull down on the message to type a quick reply and send. That's it! As you can see, you didn't have to switch apps AND it didn't really interrupt what you were doing (too much). It's a win-win for everyone!