AuthStack
Plug-and-Play Authentication & OTP API
Authentication, OTP, roles, and session management — ready-to-use for web & mobile apps.
Starting at
₹799/month
Or save with annual
₹7,990/year (save ₹1,598)
About AuthStack
AuthStack is a complete authentication solution that eliminates the complexity of building auth systems from scratch. Built on our experience creating OTP systems, auth flows, and integrating Flutter + backend + email + SMS, AuthStack provides everything you need for secure authentication. Get email & SMS OTP, password + OTP login, JWT/session handling, and role-based access control out of the box. Perfect for startups, indie developers, and agencies building internal tools.
Key Features
Frequently Asked Questions
What makes AuthStack different?
AuthStack is built by developers who've implemented auth systems countless times. We've solved the common problems so you don't have to. It's production-ready from day one.
How does OTP pricing work?
We offer a free tier with limited OTPs, and pay-per-OTP add-ons for high-volume usage. This keeps costs low for small projects and scales with your growth.
Which platforms are supported?
AuthStack provides SDKs for Node.js, Flutter, and React. We also offer REST APIs that work with any platform.
Can I use this for enterprise applications?
Absolutely. AuthStack is designed to scale from small projects to enterprise applications with role-based access control and comprehensive security features.
Quick Info
Free Trial
14 days
Monthly Price
₹799/month
Annual Price
₹7,990/year (save ₹1,598)
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