SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

I love super tokens... I have been searching for something like that in months...... But I have not seen much of how to apply it in react native... That is expo react native.... Because I want to use it for authentication in my expo react native app

thanks for the kind words. Have you seen our docs for custom UI? It has code sections on how to integrate with react native.