Retroc is an online bartering application. It is above all a social network that puts you in contact with your friends or other users so that you can exchange items between you for free and safely. To do so, you just have to register on the application, post an object, choose the categories of objects you are interested in, swipe and wait for a match. Once the match is established, it's up to you to exchange your item with the one you covet. This way, you can acquire objects for free, safely, reduce your consumption and thus have a positive ecological impact on current ecological issues. To exchange your items, there are only 3 simple steps: create an account, select the different categories of goods that interest you and with which you are ready to exchange, and start swiping to exchange items. If the items you like also appeal to another user, you'll get a MATCH, which will then allow you to trade both items.