Alzheimer's disease is a universal medical challenge. A timely identification of this ailment can reduce expenses and enhance the patient's quality of life. Alzheimer's diagnosis includes a critical component called cognitive assessment. These examinations have been carried out by neurologists, utilizing paper-and-pencil ever since the development of neurological tests. But it's obvious that integrating digital technologies into such assessments has many advantages. This chapter describes the design of an Android application, GanglioNav WithYou, for conducting cognitive assessments in Alzheimer's patients. The researchers have built a 3D virtual neurologist to conduct this assessment for Alzheimer patients. The virtual neurologist will ask questions that test the different mental abilities of patients such as time orientation, ability to recall things, concentration skills, language skills, visual interpretation skills, etc. At the end of the assessment, the total score is calculated, and the virtual neurologist will generate a detailed assessment report.