Shadow Security vs eSign
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Shadow Security
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PROTECT YOUR DOCUMENTS FROM AI ATTACKS Shadow Security is the first PDF security app with AI-powered threat detection. Scan documents for prompt injection, data exfiltration, malware, and 160+ other sophisticated attacks. ENTERPRISE-GRADE SECURITY FOR EVERYONE • 160+ Threat Detection Patterns across 30 categories • AI Attack Protection (prompt injection, jailbreaks) • Malware & Virus Detection • Hidden Text Detection (steganography) • Data Exfiltration Prevention • SQL Injection & XSS Detection • Command Injection Protection • And much more... PROFESSIONAL PDF TOOLS INCLUDED • Full-featured PDF viewer with smooth scrolling • Annotations: highlights, notes, drawings, signatures • Form filling and editing • OCR text extraction • Page management and organization • Export to multiple formats • Print with advanced options 100% PRIVATE & SECURE • All scanning happens on YOUR device • No cloud uploads or data collection • No internet connection required • Your documents never leave your device • AES-256 encryption for sensitive data • GDPR, HIPAA, CCPA compliant CLEAN FILE EXPORT • Remove all detected threats automatically • Scrub metadata and EXIF data • Export sanitized versions of documents • Verify clean files with re-scanning • Batch cleaning for multiple files COMPLIANCE TRACKING • GDPR compliance monitoring • HIPAA compliance features • SOC2 compliance tracking • PCI-DSS compliance support • Audit logging and reporting • Enterprise-ready compliance tools ADVANCED FEATURES • Batch scanning for multiple files • Scheduled automatic scans • Folder watching and monitoring • Detailed threat reports (PDF, JSON, CSV) • Threat severity classification • Real-time security dashboard • AI-powered threat intelligence MULTI-PLATFORM • Native macOS app (Apple Silicon + Intel) • Native iOS app (iPhone + iPad) • iCloud sync across devices • Handoff support • Universal purchase PERFECT FOR • Business professionals handling sensitive documents • Healthcare providers (HIPAA compliance) • Legal professionals • Financial services • Government agencies • Privacy-conscious individuals • Anyone who values document security WHY SHADOW SECURITY? In an era of AI-powered attacks, traditional security tools aren't enough. Shadow Security uses advanced algorithms to detect sophisticated threats that other apps miss: • Prompt injection attacks that manipulate AI systems • Jailbreak techniques that bypass security controls • Hidden malicious code in seemingly innocent documents • Data exfiltration attempts • Social engineering attacks • And 155+ other threat patterns TRUSTED BY PROFESSIONALS Shadow Security is built by security experts and trusted by professionals worldwide. Our threat detection algorithms are constantly updated to protect against the latest attacks. EASY TO USE Despite its advanced capabilities, Shadow Security is incredibly easy to use: 1. Open any PDF, Word doc, or image 2. Tap "Scan for Threats" 3. Review detailed results 4. Export clean version if needed TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
eSign
Easily sign documents on your iPhone without printing or scanning. Create custom signatures, add text, and export flattened PDFs privately. Ideal for everyday signing needs like leases and offer letters.
- Draw or generate handwritten-style signatures
- Scan or import existing signatures
- Sign PDFs with text, dates, and checkmarks
- Private, local-first document storage
- Export flattened, signed PDFs
- Optional Face ID lock
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Signing a document shouldn't mean printing, scrawling, scanning, and emailing it back. Signed lets you do the whole thing on your iPhone in under a minute — and keeps every document private to your device. Make a signature you're proud of - Draw it with your finger on a smooth, natural canvas. - Type it in one of twelve handwriting styles, or in any font on your iPhone. - Add your company seal or stamp: scan or import it once, then place it like a signature. - Scan or import one you already have. - Save your favorite as the default and reuse it everywhere. Sign any PDF in seconds - Import a PDF from Files, Photos, or another app. - Drop your signature, initials, name, date, text, or a checkmark exactly where they belong. - Your name and today's date fill themselves in, so the common stuff is one tap. - Export a clean, flattened, signed PDF and share it anywhere. Private by design — this is the part that matters Signed is local-first. Your documents, your signatures, your initials — they're stored only on your iPhone. We never upload them, we can't see them, and there's no cloud copy on any server. The paperwork you sign is nobody's business but yours. Made to feel good to use - A calm, clean design that gets out of your way. - Optional Face ID lock for an extra layer of privacy. - Dark mode from day one. Signed is for the everyday signing life — leases, NDAs, offer letters, school forms, waivers, the form your landlord just emailed. Fast, beautiful, and yours alone. What your subscription includes Signed Pro unlocks everything above: saving signatures, initials and seals to your library, and signing and exporting unlimited PDFs. Choose a weekly subscription or a one-time lifetime purchase. You can create your first signature free during setup; Signed Pro is required to keep using the app. The weekly subscription auto-renews until you cancel — manage or cancel anytime in your Apple Account settings. Terms of Use: https://trysigned.app/terms Privacy Policy: https://trysigned.app/privacy
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Verdict
The clearest difference is update cadence: eSign at fortnightly against Shadow Security's every 5 months. On price, ads, 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. Shadow Security sells 1 in-app purchase, starting at $0.99 per month and eSign sells 9 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Shadow Security ships an update every 5 months, eSign fortnightly. The most recent releases landed on October 12, 2026 and October 23, 2026 respectively.
| Parameter | Shadow Security | eSign |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.7 (18 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 18 — better |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephen Luadzers | Worth A Try LLC |
In-app purchases
Shadow Security
- Shadow Security Monthly3 Days trial$0.991 Month
eSign
- Signed Weekly$3.997 Days
- Signed Weekly$7.997 Days
- Signed Monthly$9.991 Month
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- Signed Annual$19.991 Year
- Signed Annual3 Days trial$39.991 Year
- Lifetime$9.99
- Lifetime$19.99
- Lifetime$39.99
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- Lifetime$49.99









