價格：免費
檔案大小：20.5 MB
版本需求：需要 iOS 11.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
USB allows you to view what subjects students are studying within a 2.5 mile (4 km) radius through a community feed. You post your own study plans, message your peers, and make plans to collaborate. Get ready to study smarter by studying together!
支援平台：iPhone