Big55 is an Android application developed by ตลาด ซอขายสนคา มอสอง ทกชนด. It is a free lifestyle app in the shopping subcategory. The app serves as a platform for buying and selling various products online.

With Big55, users can browse and purchase items directly from the app. The app offers a wide range of categories for free listings, including electronics, cars, fashion, and pets. There are a total of 36 categories available for users to choose from.

For buyers, the app allows them to view and purchase products from members. They can also ask questions about the items directly in the app, and sellers will receive notifications of inquiries.

Sellers can register for free and post up to 10 listings per day, with the ability to include up to 150 photos in each listing. Sellers are required to remain logged in to receive notifications and are encouraged to provide their contact number in each listing.

Overall, Big55 provides a convenient platform for buying and selling a wide variety of products. The app offers features such as cross-platform posting, image compression, sharing options, and search functionality for both products and sellers.