English Learning Apps’ Design The disadvantages of apps design mentioned in previous papers are divided into two kinds: one about functions in apps, and the other regarding technical features. As for functions, many fail to provide connection functions--allowing users to connect with others, either for group study or for communicating with partners in English. Teodorescu summarizes students’ perceptions about the apps’ disadvantages, among which the lack of human contact is shown in most apps. Besides, lacking feedback or corrective feedback is another common issue in many English learning apps. It is suggested that current apps run on smartphones fail to instruct users timely as well as give them feedback, although it is worth noting that several apps do well in this point like Learn English listening & speaking BBC, VOA news which gives learners guidance on what the mistakes are, and how to adjust them. The cons about technical features include Internet connection and payment system. Several researchers point out that the low-efficient Internet connection and the online mode required for accessing learning materials negatively influenced students’ learning experience. Also, the charge for extra high-quality learning materials in some apps makes students discontent.