[rahimnathwani]

"the article made the product seem very heavy, all-in-one"

This is what amazes me. WeChat has lots and lots of features, but doesn't feel heavy at all. The messaging UI is both clean (no unnecessary clutter; snappy) and feature-rich (can send text, start a voice chat, send money, send a voice message). Some of the other features that you might not use every day (like paying utility bills, topping up mobile) are in a separate 'Wallet' section which actually looks a bit like the Alipay app.