does nextAuth provide phone otp authentication?
are there any cost effective options for phone authentication?
1 Reply
I don't know if there are auth providers for phones exclusively, meaning you have to go with some of the current auth solutions...
Clerk is the cheapest IMO. From others I know firebase has it, Auth0... there are sure others but I havent used them...
If you want to go self host maybe try Appwrite, however you still need a way to send SMSs, which means you need to use a provider like Twilio or something like that which is quite expensive... so again we are back to clerk
You could theoretically build an auth layer yourself, then maybe use twilio or something similar. This might give you a bit cheaper solution, but given the time you will invest, the potential problems, and lack of features compared to auth providers, I don't think this is a viableoption