I have created a flutter delivery app for (3) months, its now 99% complete. I am planning to make this app available just within my city, However I am worried that someone will take time to extract/decompile and reverse engineer my app to extract the customer info(fullName,Address,tel.no) that I have storing in cloud firestore, So far I have taken all the security measures I can think of:
1.) Using pro-guard and pro-guard rules
However none of this can protect my users data 100% not just like big app companies who manage data on their server side infrastructure which I dont have resources and the know how. What I am really worried about is when they reverse engineer my app they can extract all users I have then I have to face consequence or lawsuit from my users.