Ferret OSINT vs Sentinel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ferret OSINT
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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.
Sentinel
An AI-assisted platform for investigators and security professionals to gather, verify, and structure intelligence from public and government sources. It helps identify confirmed findings, uncertainties, and next verification steps.
- AI-assisted intelligence gathering
- Public and government source research
- Automated wanted and sanctions screening
- Entity resolution and image forensics
- Case management and field notes
- Professional reporting with branding
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Know more before making contact. An AI-assisted Field Intelligence Platform for investigators and security professionals. Sentinel combines public sources with government, law-enforcement, and sanctions data, then shows what the evidence supports, what is uncertain, and what to verify next. AI THAT SUPPORTS THE ANALYST AI does the first pass. The professional makes the call. • Field Brief: wanted and sanctions results, risk flags, identity confidence, and the top checks before contact, in seconds • Full Analysis: confirmed findings, possible associations, contradictions, information gaps, and source references • Web Brief: live web research written into a source-cited summary Sentinel's AI states what it cannot verify, treats a name match as unverified until identity is confirmed, and is built not to merge different people who share a name. AI is powered by Claude models from Anthropic. NEW: SANCTIONS & EXPORT SCREENING Screen any person or company against the U.S. Consolidated Screening List, official U.S. government data including the SDN List, the Entity List, and the Denied Persons List, plus the UK Sanctions List. Each match shows the list, agency, match quality, source, and data date. Company / Org searches include this screening automatically. Included in every plan, including the free trial. NEW: HEALTHCARE EXCLUSION CHECK Check a person or business against the HHS OIG List of Excluded Individuals/Entities (LEIE), with the data date and source on every result. Sentinel is independent and not affiliated with or endorsed by any government. START WITH ONE IDENTIFIER Begin with a name, phone, email, company, vehicle, domain, IP address, or location. 150+ PUBLIC SOURCES. ONE WORKFLOW. Automated checks against 19 wanted, sanctions, and exclusion lists, such as FBI, Interpol, OFAC, UN, EU, UK, BIS, and Canada, plus guided research across 150+ public sources. A check that cannot run is marked unavailable, never shown as a clean result. EVIDENCE PROVENANCE Finding → Source → Verification Status → Professional Decision. Mark findings Confirm, Reject, or Review. ENTITY RESOLUTION & IMAGE FORENSICS Map relationships between people, phones, emails, companies, vehicles, and domains. Analyze images for metadata, error level, compression, and hidden-data indicators. CASE & FIELD INTELLIGENCE Cases, AI-assisted client intake, AI field note analysis, voice dictation, timelines, maps, Watch List, and saved Field Briefs. PROFESSIONAL REPORTING Investigator, Executive Summary, Due Diligence, and Client-Ready PDF reports with sources, methodology, limitations, and your own branding (Pro). LOCAL-FIRST PRIVACY Case data stays on your device, encrypted with AES-256-GCM, with keys in the iOS Keychain. Auto-lock, device integrity checks, and Wipe All Data, which also destroys the keys. No ads. No tracking. Sentinel does not keep your AI requests, AI responses, or analyzed images on its server. PLANS Same sources, methodology, and security in both plans. Pro adds capacity and advanced reporting. • Essential: 20 AI analyses and 20 Web Briefs per month, 10 searches per day • Pro: 100 AI analyses (50 in the first 14 days) and 50 Web Briefs per month, unlimited searches, all report types and branding Monthly subscriptions through Apple. Subscribe anytime, even during your trial. Cancel anytime in your Apple account settings. 7-DAY FREE TRIAL No card required, and the trial never converts to a paid plan on its own. It includes 5 Field Briefs, 1 other AI analysis, 1 Web Brief, and 5 searches per day. Full Analysis requires Essential or Pro. WHAT SENTINEL IS NOT Not a people-search or background-check service; does not sell personal records. For lawful professional research. Not a consumer reporting agency; not for employment, tenant, credit, insurance, or other eligibility decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sentinelosint.github.io/sentinel-privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: Ferret OSINT at none against Sentinel's 2. Sentinel's advantage is update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Sentinel sells 2 in-app purchases, starting at $24.99 per month. Ferret OSINT asks for nothing beyond the download.
Ferret OSINT ships an update every 3 months, Sentinel weekly. Both last shipped on October 31, 2026.
| Parameter | Ferret OSINT | Sentinel |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 20 MB | 43 MB |
| Age rating | 4+ | 17+ |
| Developer | Konstantin Shvetsov | Eija Huttunen |
In-app purchases
Ferret OSINT
No in-app purchases
Sentinel
- Sentinel Essential$24.991 Month
- Sentinel Pro$59.991 Month







