Pigeon AI vs Quardian

无论是需要灵感创作一篇文章，快速厘清一个复杂概念，还是轻松处理日常工作中的文档，鸽子 AI 助手都能以最自然的方式理解你的需求，并提供清晰、有用、充满洞见的回应。它是你探索知识、提升效率、激发创造力的随身智慧大脑。让鸽子 AI 助手帮你把想法变成现实，让思考与创作变得更简单。

Every QR code is a blind hyperlink. Quardian opens your eyes. Quardian is the most advanced QR code security scanner for iOS. Point your camera at any QR code or barcode, and Quardian instantly runs 14 security checks — all on-device, in under 200ms, with zero data leaving your phone. ▸ REAL-TIME THREAT DETECTION • Phishing detection — catches brand impersonation, suspicious domains, and URL shortener obfuscation • JavaScript injection blocking — detects XSS payloads, script tags, event handlers, and encoded attacks • SSL certificate verification — inspects the actual certificate, extracts organization, country of origin (with flag), issuer, and expiration date • Domain trust verification — unknown domains start as suspicious until SSL is verified • EMV payment QR validation with CRC-16 checksum integrity ▸ SAFE BROWSER (PRO) Open scanned URLs in a hardened sandboxed browser. JavaScript blocked by default. No cookies. No persistent storage. No downloads. Redirect chain detection. Credential harvesting prevention. ▸ BARCODE SCANNER & FOOD SAFETY Scan any UPC or EAN product barcode to instantly see the product name, estimated price, Nutri-Score (A–E), NOVA processing level, and full nutrition facts. Quardian checks against 50+ harmful substances including Red 40, HFCS, trans fats, BVO, titanium dioxide, and more — using EU safety standards with child safety alerts. ▸ AI IMAGE DETECTOR (PRO) Detect AI-generated images using 7 on-device analysis signals — EXIF metadata, camera hardware, resolution patterns, noise variance, edge sharpness, color distribution, and file format analysis. Sweep your entire photo library to find AI images hiding among real photos. ▸ HIPAA COMPLIANCE (PRO) The only QR scanner designed for clinical environments. Detects Protected Health Information (SSN, MRN, DOB, insurance IDs). Biometric session lock. Immutable audit trail. Configurable data retention. Device security audit. ▸ FREE WITH DAILY LIMITS Every feature is available free: 5 scans/day, 3 URL checks, 1 AI analysis, 3 Safe Browser uses. Upgrade to Pro for unlimited access. ▸ PRO PLANS • Monthly: $3.99/mo (7-day free trial) • Yearly: $29.99/yr — save 37% (7-day free trial) ▸ PRIVACY FIRST No accounts. No tracking. No analytics. No data uploaded. Everything runs on-device. Your scan history never leaves your phone. U.S. Patent Pending (App. No. 30/053,383) Privacy policy https://quardian.ai/privacy.html Terms of use https://quardian.ai/terms.html