vs
Comparison
Castle vs Clerk
Who’s behind each, what their homepages track, what they cost and how often their policies changed, measured the same way for both. By what they offer, they’re very close.
Castle provides SDKs and APIs for detecting bots, account takeover, fake signups and in-app fraud using device fingerprinting, IP and email intelligence, behavioral analysis and a rules engine for real-time allow, challenge or deny decisions.
Clerk provides hosted authentication and user management for web applications. It includes prebuilt sign-in and profile UI components, multifactor authentication, social login, session management, organizations and multi-tenancy, and bot and fraud prevention.
- Company
- Not stated
- Not stated
- Registered in
- Unknown
- Unknown
- Online since
- Unknown
- Unknown
- Audience
- Smaller site
- Top 10K
- Trackers on the homepage
-
- Visitor analytics: PostHog
- fewer
- Ad trackers
- None
- None
- Cookie banner
- –
- –
- Prices
- No pricing page found
- No pricing page found
- Last price change
- –
- –
- Privacy policy changes
- 0
- 0
- Terms changes
- 0
- 0
- Open positions
- –
- –
Trackers are what each homepage loads before cookie consent; changes count since we started checking each site weekly. Hover a dotted value for its source and date.