Briefly describe the design of the mobile application (including a list of various modules)

Instructions:
Suppose you want to design ONE of the following mobile applications (choose A1 or A2 or A3 or A4 or A5 as your choice or A5 as per your interests).
Briefly describe the design of the mobile application (including a list of various modules)
both High Level Design (-1 page of HLD) and Low Level Design (-5 pages of LLD) along with some design diagram.
Also, explain which mobile operating system you will use and why.
THINK IN TERMS OF MOBILE APP!! Think Mobile OS as well!!
Finalize your project A1-A6 and inform professor by Friday, July 14 and then submit final report by Monday, July 17.
Prepare a PowerPoint deck (5 slides: Introduction, HLD, LLD, Benefits, Summary, etc.) for presentation during the class.
A1) Electronic Health Records (EHR) A2) Learning Management System (LMS) A3) Location Identification System (LIS) A4) Spellchecker for English (SFE) A5) Supply Chain Management (SCM) A6) Any other mobile app of your choice