Other lets you send canned messages to one person
If you regularly message someone with updates like you’re heading home or stuck in traffic, the Other app for iOS will make it easier for you. It’s a bit like a launcher for messaging but you just do it for another person (perhaps your spouse). It allows you to create canned messages that you can send through the iPhones Messages app. If you use one of the newer iPhones, you can even have a 3D Touch shortcut for this on your home screen. Other also comes with a share extension, letting you send URLs to this person with just a few taps.
Source: Lifehacker | Download: Apple App Store (Free)