Ferret OSINT vs HeaderCheck

Ferret OSINT brings essential open-source intelligence tools to iPhone for fast, focused technical investigation. Built for mobile workflows, it helps you analyze public domain and footprint data without unnecessary complexity. Your results stay under your control. Ferret OSINT stores all data locally on your device with AES-256 encryption, avoids third-party storage, and uses open, transparent methods based on publicly available sources. Core features: DNS Lookup — Review DNS records grouped for faster analysis of domain infrastructure. WHOIS — Check public registration details, registrar information, and key domain dates where available. Subdomain Discovery — Identify related subdomains to expand visibility into a target's public-facing surface. Public Email Discovery — Find publicly exposed email addresses from open sources using non-intrusive methods. Shodan Integration — Export subdomain results directly to Shodan. Select multiple targets and send them as a batch for deeper infrastructure analysis. Core features: DNS Lookup — Review DNS records grouped for faster analysis of domain infrastructure. WHOIS — Check public registration details, registrar information, and key domain dates where available. Subdomain Discovery — Identify related subdomains to expand visibility into a target's public-facing surface. Public Email Discovery — Find publicly exposed email addresses from open sources using non-intrusive methods. Shodan Integration — Export subdomain results directly to Shodan. Select multiple targets and send them as a batch for deeper infrastructure analysis. Export and share: Long-press any result to share or copy it via the iOS share sheet. Works for DNS, WHOIS, subdomain, and email results. Built for practical investigation: Optimized for iPhone. Clear interface for rapid lookups and structured review. No login, no external account, and no background tracking. Shodan API key stored encrypted on device. (Shodan integration requires the user's own Shodan API key. No keys are provided by the developer) Useful for analysts, incident responders, penetration testers, and OSINT practitioners. Ferret OSINT is designed for lawful security research, digital footprint analysis, and technical investigation using public sources. Whether you are reviewing DNS records, checking WHOIS data, mapping subdomains, identifying public contact indicators, or pivoting to Shodan for deeper analysis, Ferret OSINT gives you a lightweight mobile toolkit for focused OSINT work.

HeaderCheck reads the hidden headers of an email and tells you, in plain language, whether the sender's domain checked out. Paste the headers and HeaderCheck shows clear Pass, Fail, Softfail or Missing results for SPF, DKIM and DMARC, explains whether the domains line up, and points out anything worth a second look. It does the work on your iPhone or iPad. There's no account and no sign-in, and your headers are never uploaded. WHAT YOU GET FOR FREE • Header analysis for SPF, DKIM and DMARC • Simple explanations of each result • Domain alignment notes • A built-in guide to finding and copying headers HEADERCHECK PRO (ONE-TIME PURCHASE) • Reputation hints: see if the sender's domain comes from a throwaway or free email provider, and which public servers handed the message along • Optional live DNS checks: look up those servers on the SpamCop and PSBL block lists, and check whether the sender's domain publishes SPF, DMARC and MX records. Off until you turn it on in Settings • Open email files from Mail, Files or other apps • Copy a plain-text summary or export a PDF report, hints included • Unlimited History Reputation hints are just that: extra context to help you decide. They never call a message good or bad on their own. PRIVATE BY DESIGN • Analysis happens on your iPhone or iPad • No account, no analytics, no tracking • Headers and message content are never sent to us • Live DNS checks are optional. When they're on, only server addresses and the sender's domain are looked up through your device's normal DNS Available in 14 languages. HeaderCheck reports what's in the headers you give it. It can't promise that a message is safe, and it isn't legal advice. Privacy policy: https://headercheck.app/privacy Support: https://headercheck.app/support