I am sure this question has been asked already, but I created an app that allows realtors to refer my business. Quick and easy. I really need to require user login, because USEREMAIL() is a function that is necessary. I am hoping to get the buy in of 50 realtors, who may only use the app a few times a year. Its not economical to spend $500 per month on this app. Is there another way, like whitelist app? (not sure how those work)
LinkedIn
Twitter
