Cost performance. Another name he is interested in is cost performance. Taqu, formerly known as cost-effective, is a mobile phone App developed by Xiamen Seal Taqu Information Technology Co., Ltd. Taqu App is a comprehensive online dating and pan-entertainment platform. The platform provides young users with one-stop entertainment services such as live broadcast, making friends, community and chat room, and provides users with various online interactive functions such as chatting, making friends, live broadcast and forum sharing.