If you love messaging and like staying in touch with your friends then Google Allo is a must have app for you. The app has all the essential feature for messaging. You should have the number of your friend with whom you wish to chat. The app has some really good stickers and GIFs which will make your conversations more interesting. The app also has an incognito mode in which you can have your private chats. Apart from private chats you can also have group chats. Google Allo also allows you to share pictures and write on them. It also comes with Google Assistant integration, which answers all the questions your ask it. In all it is a pretty decent app and is also very easy to use. So, you must try it.