Flychat

Flychat is an app that lets you read and respond to notifications from any messaging app, right from your home screen, lock screen, or even while using another app. The notifications appear in a bubble that's very similar to Facebook Messenger. All you have to do is tap it to start writing.

The list of apps compatible with Flychat include all the most popular messaging apps: WhatsApp, Telegram, Line, Hangouts, Skype, Twitter, Facebook Messenger, Textra, and Plus Messenger. If you receive a message through any of these apps, you can respond instantly from the corresponding bubble.

In the setup options, you'll be able to customize notifications for each app. The easiest thing is to customize the notification colors, but you can also deactivate Flychat for certain apps and keep it active for the rest, or change the size of the bubble. In short, you can personalize Flychat however you want.

Flychat is a very useful app, that lets you respond to messages from practically any messaging app, directly from your lock screen, or while you're playing any game. Plus, the app has a really nice-looking interface.