WeChat

WeChat lets you keep in touch with anyone who uses the same application, regardless of the operating system that person uses, be it Android or iOS. You can send text messages to individuals and groups, pictures, videos, voice messages, GPS information, and even make video calls in high definition.

Before you start using the app, as with similar services like WhatsApp or LINE, you'll have to associate your phone number with a personal account, which should take only a few minutes. Once you've done this, you'll be able to see a list of people from your contacts who are also using WeChat.

All the conversations you have via WeChat will be saved to your device but not to the server—that is, only you can access them, and only from your device. No one else. This way, you can chat without worrying about them being saved to the cloud or on some external server.

One interesting feature in WeChat is that it lets you talk with random users. You just have to select this mode, shake your Android device, and in just seconds you'll be connected with somebody else.

WeChat is an alternative way of communicating. You can use it to establish conversations with the speed and ease that are typical of this kind of apps. The only drawback is that its user base is smaller compared to others.