Mobile Health Application in China: Cross-sectional Study (Preprint)
BACKGROUND Mobile health applications are emerging as a novel platform to obtain data pertinent to wellness and disease diagnosis, prevention, and management. As the future general trend of medical informatization, mobile health is an indispensable way to promote universal medical care to reduce disease burden. The features of these mHealth apps in China is unclear, so we collected a wide range of application information to evaluate these apps effectively. OBJECTIVE We aim to provide a landscape of mHealth apps on the existing market in China. We expect that based on the actual state, this study can give future development directions of mHealth apps. METHODS We searched mHealth apps from five android app stores (Huawei, Oppo, Vivo, Tencent, and 360), Apple App Store (IOS), and Baidu search engine up to October 25, 2019. We also searched the inventory of the top 100 Chinese hospitals in 2018 and four online shopping sites (Tmall, JD, Pinduoduo, and Suning) to identify apps of Internet hospitals and intelligent devices, respectively. RESULTS We identified 2425 mHealth apps (93.3% android, 69.2% iPhone) in the primary analysis, whose intentional users were ordinary consumers (Android 1808/2262, 79.9%; IOS 1350/1677, 80.5%). 56.1% (1168/2081) of app developers were Internet companies. More than 90% of apps were available free of cost (Android 2111/2262, 93.3%; IOS 1615/1677, 96.3%), but in-app purchases accounted for more than 60% (Android 1397/2262, 61.8%; IOS 1189/1677, 70.9%). Of the 1285 public available apps, 1248 were for health management, of which 26.3% (328/1248) were related to bodybuilding, and 13.7% (171/1248) were related to women's health. The other 697 apps were used for medical support, and 289 of them were related to inquiries. The permissions required by the apps include claiming the network (2081/2107), reading the status and identity of the phone (1881/2107) , and location (1799/2107). CONCLUSIONS With the increasing condition of the paid and membership system, rising profit of mHealth app drives various industries to move forward. This study guides research designs of future apps in mHealth field. The prospect of mHealth app is bright, but there exists a critical condition in claiming excessive permissions, security, and legal management, which need to be further strengthened.