Huaan Zhiying app is good.

1. Interface design: The interface of Huaan Zhiying app is simple and clear, and the operation flow is reasonable. Users can quickly find the required functions and information. The app also provides rich charts and data to help users better understand the market dynamics and investment performance.

2. Full functions: Huaan Zhiying app provides a variety of investment tools and functions, including stock trading, fund purchase and bond investment, which can meet the needs of different investors. The app also provides personalized investment advice and financial planning to help users better achieve their investment goals.