Mobile Technologies, Applications and Software Design Baidu App for the Elderly Content and Service Mobile App by BAIDU MEUX China is facing serious aging problems. Baidu App for the Elderly provides rich content and services for the elderly. It also provides a systematic, age-friendly design which is convenient for the users to read and listen contents, and use the app. In combination with different tools and AI technologies such as voice and image synthesis, the app offers abundant services for the elderly to help them enrich life, enjoy digital services, and keep up with the digital era.