KupujemProdajem is the largest online community for buying and selling in Serbia, with over 2.7 million registered users and more than 5 million active listings at any given time. The app allows you to post ads quickly and easily from your phone, as well as search through over 5 million listings across 80+ categories. You can also save your searches and get notified when new ads that interest you are posted.

The app also provides an easy way to contact buyers or sellers through KP messages or by phone. You can edit or delete your ads from anywhere and even promote them to the top of the group directly from your phone. The app also features a currency converter and notifications for ad status and promotions.

Overall, KupujemProdajem offers a convenient and user-friendly way to buy and sell items online in Serbia, with a large and active community. The app is constantly being improved with user feedback, so if you have any suggestions or feedback, be sure to use the "Help and Contact" option in the My KP menu.