GuardPad - Security Scanner

Headers, SSL, DNS & Monitoring

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Major 2.0 — Share Extension, Siri, Widgets, MTA-STS, post-quantum TLS, WAF fingerprinting, PCI DSS 4.0, continuous monitoring, and 30+ analyzed dimensions. Scan any URL and get an instant A+ to F security grade with actionable fixes — right from your iPhone or iPad. GuardPad analyzes 11 HTTP security headers, SSL/TLS certificates (including post-quantum readiness), cookies, redirect chains, DNS records, email security, and infrastructure fingerprints in seconds. The most comprehensive mobile security scanner — and the only one with widgets, Siri integration, and a Share Extension. Try every feature free for 3 days. No account required. No data collected. NATIVE iOS, EVERYWHERE YOU NEED IT • Share Extension — scan any URL straight from Safari or any browser • Siri & Shortcuts — "Hey Siri, scan example.com with GuardPad" • Home Screen & Lock Screen widgets for pinned domains • Control Center toggle for instant re-scans (iOS 18+) • Universal app with optimized iPad layouts FREE FEATURES • 11 graded security headers (HSTS, CSP, COOP, COEP, CORP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, X-XSS-Protection, Server) • Email security analysis — SPF, DMARC, DKIM, MTA-STS, and BIMI graded with detailed findings • Cookie security analysis (Secure, HttpOnly, SameSite, __Host- prefix) • CSP depth analysis (nonce, strict-dynamic, Report-Only) • SSL/TLS certificate inspection with cipher suite details • TLS depth analysis with post-quantum (X25519MLKEM768) detection • Redirect chain visualization with quality grading • Deprecated header detection (HPKP, Expect-CT, Feature-Policy) • OWASP Top 10:2025 compliance mapping • .well-known directory scanner (security.txt RFC 9116 and more) • WAF/CDN fingerprinting (Cloudflare, CloudFront, Akamai, Fastly, and 10 more) • Subdomain discovery via DNS-over-HTTPS • API endpoint intelligence (rate limits, exposed docs, GraphQL introspection) • PCI DSS 4.0 readiness assessment • Comparative context — percentile ranking against your scan history • Quick Fix mode — see your highest-impact issues first • Actionable WHAT/WHY/FIX diagnostics for every finding • Domain-grouped scan history • Works offline for reviewing past results PRO FEATURES • Continuous monitoring — scheduled background re-scans with change-only notifications (unlimited domains with Yearly, 1 domain with Lifetime) • Certificate expiry alerts (30/14/7/3/1 days) • Grade trend charts and security posture dashboard • Batch scanning — up to 50 URLs at once with aggregate report • Shareable security grade card and shields.io-style badge for READMEs • iPad side-by-side scan comparison • Server-specific fix code snippets for nginx, Apache, Express.js, and Caddy • CORS configuration tester • DNS record lookup with DNSSEC, CAA, and full record types (A, AAAA, MX, CNAME, TXT, NS, SOA) • PDF and Markdown export • Full certificate chain inspection Built for developers, security engineers, and IT teams who ship secure web applications. Whether you maintain nginx, Apache, Express.js, or Caddy, GuardPad gives you the tools to verify your configuration matches OWASP, PCI DSS 4.0, and modern security baselines. PRIVACY-FIRST No account. No analytics SDKs. No tracking. Zero external dependencies. All analysis happens on your device. Scan results stay in SwiftData on your device only. See Privacy Policy in Settings. GuardPad is a developer tool for auditing security configuration of web servers you own or have permission to scan. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

  • This app hasn’t received enough ratings or reviews to display an overview.

v2.0.1 — More trustworthy grades, better PRO experience. GRADING ACCURACY • SPF records with CIDR mechanisms (a/24, mx/24) and uncommon mechanisms are now graded correctly — no more false F on valid records. • Scanning www.yourdomain.com now finds SPF/DMARC published at your root domain (RFC 7489 organizational-domain fallback). • Long SPF records split across multiple TXT strings are parsed correctly. • When DNS lookups fail on restricted networks, email security is reported as unavailable instead of dragging down your grade. • CSP frame-ancestors with a wildcard no longer counts as clickjacking protection. PRO & TRIAL • GuardPad PRO Yearly now starts with a 14-day free trial. • Yearly subscribers see their plan and renewal date in Settings, with in-app subscription management. • Clear feedback for purchases, restores, and Ask to Buy — no more silent failures. • Trial reminder notification before your PRO trial ends. • New Lifetime purchases include background monitoring for 1 pinned domain; unlimited monitoring comes with Yearly. Existing Lifetime owners keep unlimited monitoring. RELIABILITY • On-device crash diagnostics (nothing leaves your device — privacy unchanged: no data collected). • If the local database ever has to be rebuilt, the app now tells you instead of silently losing history.

The developer, Olof Petterson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Olof Petterson
    Size
    • 8 MB
    Category
    • Developer Tools
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • iPad
      Requires iPadOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.2 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    • GuardPad PRO Yearly $3.99
    • GuardPad PRO $9.99
    Copyright
    • © 2026 Olof Petterson. All rights reserved.