The most popular apps in China are definitely WeChat and Alipay. Almost everyone in China uses WeChat for daily communication, social media, and even business transactions. Alipay, on the other hand, is widely used for mobile payments. Then there's Douyin, which is the Chinese version of TikTok, extremely popular for entertainment. For shopping, Taobao is the go-to app, and Baidu remains the top choice for search engine needs.

On the flip side, apps that aren't well-received in China are usually those that require high subscription fees or aren't optimized for local preferences. Apps with poor user interfaces or those that suffer from frequent bugs also tend to be unpopular. Additionally, international apps that haven't adapted well to the Chinese market or those that have faced regulatory bans struggle to gain traction among Chinese users.