WeChat is only available for Windows.
You may still download it but the .exe file will only work on Windows.
At its core, WeChat is an instant messaging application. This means that you can use it to send text instant messages to any and all your friends.
Typing isn’t always the most efficient way of communicating with others. If you have something to say and don’t have the time to type it, then leave your friend a voice message.
WeChat lets you make voice and video calls to other WeChat users. On top of that, it lets you make voice calls to landline as well as mobile phones.
While most conversations are one-on-one, sometimes you need to talk to a group of people at once. WeChat lets you create group chats for up to 500 people and video calls for up to 9 people.
WeChat is free software, available for all major desktop and mobile platforms. And if you don’t want to use WeChat for PC, Mac, iOS, Android or Windows Mobile, you can always use WeChat for web.