IdleGo is a mobile app available on iOS and Android that facilitates used item exchange within college students. College students often find it hard to sell or buy used books and college specific tools like iClicker. And it was not entirely safe and convenient for college students to meet people off campus. Designed specifically for college students with enhanced safety measures and fine-tuned for their needs, Flea provides a perfect platform for such exchange of items. Initially it will only be available for UCSD students and users need to login with their UCSD email in which they will receive confirmation to verify student status. Later in the plan we will introduce online payment, bidding system, and in-app chatting and bring it to other colleges and universities. We do sincerely believe in our vision for creating a safe, reliable, helpful, and hassle-free platform for selling and buying used items and hope for the best for their future and endeavor.