sdk 342 android1 business app1 business reports1 business tools1 client database1 html invoices1 invoice generator1 invoice maker1 invoicing app1 item management1 kotlin password manager1 medium business1 mvi architecture1 otp authentication1 otp verification1 passcode protection1 password analytics1 password generator1 password manager1 password reset1 password security1 password storage1 password vault1 profile management1 secure passwords1 secure vault app1 small business1 strong authentication1