Wechat(微信): Wechat is the chatting tools in China, 1 billion people in china use it daily, when you are in China, to have an wechat account is very very important to communicate with others.

It is also a bank to keep money in it, we do shopping with wechat bank instead of bank card or cash.

Alipay(支付宝）:

Alipay is the E-bank of China, a lot of transactions are happening by alipay instead of bank transfer, it is a pocket of money, a walking bank.