Clerk
Platform for managing authentication and user accounts in web and mobile applications.
Overview
Clerk
Clerk overview
Clerk is a platform for managing authentication and user accounts, built for developers of web and mobile applications. The service provides ready-made UI components and SDKs that make it easy to integrate registration, social login, two-factor authentication, session management, and profile management without building an authentication system from scratch. Clerk is designed to accelerate MVP development and scaling of SaaS products, supporting modern stacks such as Next.js, React, Remix, Astro, Expo, as well as native Android and iOS platforms.
Clerk characteristics
| Characteristic | Value |
|---|---|
| Type | AI tool for user authentication |
| Category | Development, SaaS, Authorization |
| Platforms | Web, Android, iOS, API, Browser extension |
| Pricing model | Freemium (Hobby/Pro/Business) |
| Free plan | Yes (up to 50,000 active users per month) |
| Pro price | from 20–25 USD per month depending on payment terms |
| Interface language | English (Account Portal), Russian — support on the website |
| VPN required | No |
| Compliance | SOC 2 type 2 |
Who is Clerk for?
Developers and product teams
Clerk is aimed at developers building web or AI products who need to quickly add authentication, profiles, teams, and subscriptions. The platform is especially convenient for those working with Next.js, React, Vue, Nuxt, Svelte, Expo, Android, and iOS.
Businesses and product managers
The service suits startups and growing SaaS companies that need ready-made infrastructure for managing users, B2B organizations, and billing. Clerk helps accelerate the path from prototype to public launch.
Teams launching MVPs
Developers who want to build a minimum viable product without writing their own authentication system can use Clerk's ready-made components for registration, login, and session management.
How to use Clerk?
Sign-up and setup
The first step is to create an account on the Clerk website. Full functionality is available in development mode without entering a credit card. After registration, an application is created, and you can configure its authentication settings.
Integrating the SDK into your app
Clerk provides SDKs for popular frameworks and platforms: React, Next.js, Remix, Astro, Expo, and native Android and iOS. Integration involves installing the package and connecting Clerk components to your app.
Using ready-made UI components
The best scenario is to first build authentication with the ready-made components and add customization later. For an MVP, this is enough: components for registration, login, profile, sessions, roles, and subscriptions let you launch functionality faster than with a custom build.
Key features of Clerk
Authentication and user management
Clerk supports authentication via email/password, social login, passkeys, multi-factor authentication (MFA), and enterprise connections. The platform also provides session management, profile management, and access recovery.
Ready-to-use embeddable UI components
The service includes ready-made interface components for registration, login, profile, organization management, and billing. These components are customizable and can be fine-tuned to match your app's brand.
Organizations and B2B product support
Clerk supports Organizations — functionality for creating team accounts and managing roles, permissions, and invitations. This is especially useful for B2B products with separate teams and workspaces.
Built-in billing
The platform includes a subscription layer (Clerk Billing) with a 0.7% fee on payment volume. This lets you set up subscriptions and billing inside your product without integrating additional services.
Advantages of Clerk
Comprehensive user management feature set
Clerk provides everything needed for authentication,
