Rownd

Complete authentication and app services platform that handles everything from sign-in to scale, trusted by AI builders and product-led teams worldwide. Free for up to 1 million monthly active users with no credit card required.

Key features include:

• Passwordless authentication with passkeys and magic links for frictionless user experience
• Pre-built UI components for auth, payments, and user flows to launch faster
• Fully customizable interfaces that match your brand without compromising control
• Quick integration in minutes using SDKs or APIs across all major platforms
• Built-in payments and subscriptions with smart links for marketing campaigns
• Real-time user insights and metrics to optimize conversion and retention

Perfect for developers who want to ship faster without building authentication from scratch. Ideal for product teams looking to boost retention with better user experiences. Great for marketers who need frictionless sign-ins that drive growth.

Enterprise-grade security with SOC-2 certification, advanced encryption, and compliance with global standards. Adaptive sign-in updates in real-time based on user behavior without requiring redeployment.

Customers report conversion improvements from 40% to 77% after implementing Rownd. Backed by Y Combinator and trusted by companies scaling to millions of users.