Folder (hidden data) vs Sentinel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Folder (hidden data)
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Keep your files, photos, passwords, notes, contacts, and to-do lists private — encrypted on your iPhone, accessible only through the app. • All your information is encrypted with AES • The only way to access your content is through the app • Lock individual sections with biometrics or a PIN • App Lock secures the entire app when it goes to the background • No internet connection needed • All data stays on your iPhone — no servers, no cloud • Private contacts — store secret contacts encrypted on your iPhone • Private to-do lists for tasks only you can see
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 ads: Sentinel at none against Folder (hidden data)'s shown. Sentinel also leads on update cadence (weekly vs every 4 weeks) and iOS requirement (15.1 vs 26.0). On price, in-app purchases and device support 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. Folder (hidden data) sells 1 one-off in-app purchase and Sentinel sells 3 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.
Folder (hidden data) ships an update every 4 weeks, Sentinel weekly. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.
| Parameter | Folder (hidden data) | Sentinel |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 weeks | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 9 MB | 43 MB |
| Age rating | 4+ | 17+ |
| Developer | Ezequiel Barreto | Eija Huttunen |
In-app purchases
Folder (hidden data)
- Remove Ads$0.99
Sentinel
- Sentinel Essential$24.991 Month
- Sentinel Solo$29.991 Month
- Sentinel Pro$59.991 Month









