Messaging App is an app which can be used for chatting. There are many messaging apps that you can install on your smartphone.
The ubiquity of the social network means that you can message just about anyone with the excellent Facebook Messenger app for Android.
出典：Facebook Messenger (for Android) Review & Rating | PCMag.com
Is Messenger OK for your child? Read Common Sense Media's app review to help you make informed decisions.
Communicate with your customers with Facebook Messenger.
出典：Messenger - Expressions Apps - ドキュメンテーション - 開発者向けFacebook
Messenger — a faster way to message.
出典：Messenger - Android Apps on Google Play
This is what happens when you strip one app of functionality and force users to download and install another.
出典：Facebook Messenger App Store Reviews Are Humiliating - Business Insider
Is WhatsApp Messenger OK for your child? Read Common Sense Media's app review to help you make informed decisions.
出典：WhatsApp Messenger App Review
Though you only get a few extra useful features, WhatsApp Messenger is an excellent choice for sending free texts across platforms, even internationally.
出典：WhatsApp Messenger review - CNET
Read reviews, compare customer ratings, see screenshots, and learn more about WhatsApp Messenger. Download WhatsApp Messenger and enjoy it on your iPhone, iPad, and iPod touch.
出典：WhatsApp Messenger on the App Store
WhatsApp lets you group message and send photos and videos via an easy-to-use interface--without having to pay texting fees to your carrier.
出典：WhatsApp Review | Smartphone App Reviews
WhatsApp Messenger :: cross-platform mobile messaging app for iPhone, BlackBerry, Android, Windows Phone and Nokia. Send text, video, images, audio for free.
Simple. Personal. Real Time.
出典：WhatsApp Messenger - Android Apps on Google Play