一尘pro is an educational and reference app available on the iPhone platform. Developed by Shanghai Xunhong Culture Communication Co. Ltd., this app provides users with real-time information on postal cards and coins.

With 一尘pro, users can easily access a wide range of features. The app allows users to sort themes, preview images, and search for specific themes. Additionally, users can subscribe to receive notifications for new themes, browse their browsing history, and save their favorite themes. The app also includes a coin rating query feature, allowing users to easily find information about coin ratings.

Overall, 一尘pro is a comprehensive app for individuals interested in postal cards and coins. Its real-time information, theme sorting, image preview, and search capabilities make it a valuable tool for collectors and enthusiasts in this field.