vs
Comparison
Castle vs Semrush
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.
Subscription software for search engine optimization and online marketing, providing keyword research, backlink and competitor analysis, site audits, rank tracking, PPC research, local SEO and tracking of brand visibility in AI chatbot answers.
- Company
- Not stated
- Not stated
- Registered in
- Unknown
- Unknown
- Online since
- Unknown
- Unknown
- Audience
- Smaller site
- Top 10K
- Trackers on the homepage
- fewer
- Visitor analytics: PostHog
-
- Marketing and email tracking: HubSpot, Marketo
- Third-party embeds: Google Fonts
- Ad trackers
- None
- None
- Cookie banner
- –
- –
- Prices
- No pricing page found
- €112.52
- €112.52 / mo
- €134
- €158.40
- €158.40 / mo
Has a free plan
- Last price change
- –
- None seen yet
- 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.