Sylphx vs Clerk
Auth-only vs. auth + full backend SaaS platform
Clerk is the gold standard for drop-in auth UI components and user management. But it's a single-purpose service — once your app needs a database, billing, AI, or analytics, you're wiring up more vendors. Sylphx includes auth as one of 19 production services, with the same polish and a unified TypeScript SDK.
Feature comparison
Side-by-side look at what each platform includes out of the box.
Key differences
19 services vs. auth only
Clerk focuses exclusively on authentication and user management. Sylphx includes all of that — OAuth, magic links, 2FA, session management, multi-tenancy — plus 18 more services. One platform for your entire SaaS stack.
Pricing at scale
Clerk's free tier covers 10,000 MAUs; after that, the Pro plan starts at $25/month plus $0.02 per additional MAU. For a 100K MAU app, Clerk alone costs $1,825/month before you add any other services. Sylphx is fully usage-based across all services with a generous free tier.
Unified SDK vs. integration work
Using Clerk means importing Clerk's SDK for auth, Stripe's SDK for billing, Supabase's client for data, etc. Sylphx's single SDK covers all services — one import, one API style, one dashboard.
UI components
Clerk's pre-built auth components are excellent — sign-in, sign-up, user profile. Sylphx's SDK ships React components for every service: auth, billing checkout, analytics consent, notification preferences, and more.