RapidSpike
Security. Performance. Peace of mind for eCommerce.
About RapidSpike
RapidSpike is a UK-based website monitoring platform built for eCommerce brands. Its Synthetics product runs scripted customer journeys and page performance checks around the clock, while CartShark detects Magecart web-skimming attacks and helps stores meet PCI DSS v4.0 script requirements (6.4.3 and 11.6.1).
Pros & Cons
Pros
- Purpose-built for eCommerce, with checkout-focused journey monitoring rather than generic uptime pings
- Combines synthetic performance monitoring and client-side security (Magecart detection) from one vendor
- Directly addresses PCI DSS v4.0 requirements 6.4.3 and 11.6.1 for payment page scripts
- CartShark Lite starts under £10/month with a free trial and fast setup
- Reviewers on G2 and Capterra consistently praise setup help and customer support
Cons
- Synthetics plans start at £199/month and are billed annually by default, which is steep for small stores
- Pricing is shown in GBP and CartShark cost scales with pageviews, so budgeting needs a quote for larger sites
- Small review base (a handful of G2 reviews), so independent feedback is limited
- Reviewers mention the interface and jargon can feel daunting for new users
Key Features
Customer Journey Monitoring
Synthetic user journeys emulate real shoppers (search, add to basket, checkout) every 10 minutes and alert when a step breaks.
Magecart / Web-Skimming Detection
CartShark watches live user traffic and checkout pages for malicious scripts that skim card data, with AI-assisted threat analysis.
PCI DSS v4.0 Script Compliance
Script inventory, authorisation, and annotation to support PCI DSS v4.0 requirements 6.4.3 and 11.6.1.
JavaScript Inventory and Change Detection
Tracks every JavaScript file loaded on key pages, keeps version history, and flags new or changed scripts.
Performance Monitoring
Page load analysis, Core Web Vitals, and automated Lighthouse audits for critical pages.
Third-Party Monitoring
Tracks performance and behaviour of third-party tags, plugins, and payment gateways loaded on the site.
Uptime and SSL Monitoring
Uptime checks plus SSL certificate, security header, and Google Safe Browsing monitoring.
Security Logs
GDPR cookie log, browser security log, and CSP security log on CartShark Plus.
Platform Apps
Plug-and-play apps for eCommerce platforms, with web-skimming protection running within minutes of setup.
Pricing
- Web-skimming (Magecart) detection
- Supports PCI DSS v4 compliance
- Unlimited users and websites
- Price scales with monthly pageviews (from 25,000)
- 7-day free trial
- Everything in Lite
- Third-party performance monitoring
- Script authorisation and version history
- CSP, cookie, and browser security logs
- Personalised support and managed onboarding
- Billed on pageviews plus ScriptSentinel monitors
- One key website process tested every 10 minutes
- Health and performance analysis for 4 critical pages
- Free training, support, and setup
- Billed annually (monthly billing available)
- Five key website processes tested every 10 minutes
- Health and performance analysis for 8 critical pages
- Multiple global monitoring locations
- Free training, support, and setup
- Nine or more key website processes tested every 10 minutes
- Health and performance analysis for 12+ critical pages
- SSO
- Premium support options
Best For
Checkout Uptime Assurance
Run scripted add-to-basket and checkout journeys every 10 minutes to catch broken flows before customers do.
Magecart Protection
Detect malicious or tampered scripts on checkout pages that skim payment card data.
PCI DSS v4.0 Compliance
Maintain an authorised inventory of payment-page scripts and change alerts to satisfy requirements 6.4.3 and 11.6.1.
Site Speed Optimisation
Track Core Web Vitals, Lighthouse scores, and TTFB on critical pages to improve conversion.
Agency Client Monitoring
eCommerce agencies monitor reliability and performance across multiple client stores.
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