I did similar project recently tracking available WiFi Access APoint and Using the Android WifiManager api methods to get any connected hotspot information, and if u don't have an any cloud api endpoint yet I can help you setup a firebase database api endpoint that will be storing the collected data.
I have over 6years of experience working with android studio using java and or kotlin, experienced in WiFi communication, restful api consumption, ui/ux, firebase-fcm, firebase-nosql-darabase, sqlite database, location based services, Bluetooth Low Energy communication, etc, using DDD architecture, MVP design pattern...
I developed Afrimart B2B App, Kuango IoT App, Proskool App, MultiTV mobile and leanback(TV) app. and many more
Please note that I am not bidding for this project just because of the money, I also need your positive remark on this platform at the end of this project. your satisfaction is guaranteed.
Kind Regards
Rex Oravbiere.