# Citadel VPN & WiFi Security — Network Scanner & Threat Alert > AI-powered network scanner and VPN for secure public Wi-Fi access. (iPhone/iPad app by GRY HAT CYBERSECURITY LLC.) - Source: https://appshunter.io/ios/app/citadel-vpn-and-wifi-security/id6762165977 (this page in markdown: same URL + `.md`) - Developer: [GRY HAT CYBERSECURITY LLC](https://appshunter.io/developer/1832275986) - Category: Utilities, Productivity - Price: Free with in-app purchases (on sale, was $9.99) - Rating: 4.70/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 15.1 · 62 MB - Languages: American English - Released: 2026-05-26 - Data updated: 2026-09-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/citadel-vpn-and-wifi-security/id6762165977/reviews.md ## What is Citadel VPN & WiFi Security? How do you know the public WiFi you're on is protecting you? You don't. With Citadel, now you do. Citadel is two layers in one app: an AI that reads the network before you connect, and an enterprise-grade tunnel that makes your phone disappear. Know the room. Then vanish into it. FREE download. Unlimited network scanning, free forever. The VPN comes with a 3-day free trial, then an auto-renewing monthly subscription. Cancel anytime. KNOW IF YOU'RE EXPOSED The second you launch, an instant safety gate scans the network — you'll know in about 14 seconds. Is client isolation shielding you from other guests, or can every device on the network see yours? Citadel gives you the verdict, then a deeper AI sweep hunts for what's hidden: rogue devices, dangerous open ports, threats most people never see. Every device on the network, visible. You decide who to trust before you send a single packet. TRAINED ON REAL ATTACK TOOLS Citadel recognizes the network signatures of Kali Linux, ParrotOS, Metasploit, Burp Suite, SpiderFoot, Nmap/Zenmap, and Wireshark activity — and flags open proxy services, the backbone of interception tools like OWASP ZAP and mitmproxy. New tool fingerprints ship with every update. Every network is different. Detection depends on network conditions, device behavior, and whether tools are active — no scanner can guarantee it will identify every device or threat on every network. ONE-TAP VPN Tap once and you're inside a WireGuard tunnel. On public WiFi your phone normally broadcasts your real IP, your carrier, your location. On Citadel, all of it goes dark — your connection looks like plain datacenter transit. No carrier identity. No device fingerprint. No home-city geolocation. Your phone stops looking like your phone. WHY CHACHA20 The cipher WireGuard was built around — the same one TLS 1.3 uses to secure most of today's encrypted web. Fast on mobile, brutally hard to break. Most VPNs show you a lock icon. We show you ChaCha20 — right on screen, so you see exactly what's protecting you. BUILT FOR THE ROAD Airports, hotels, coffee shops, conference halls — over 500,000 networks scanned. If you work from anywhere, this is the layer between you and every network you don't control. ZERO TRAFFIC LOGS The tunnel encrypts your connection and that's where it ends. No browsing history, no activity logs, nothing to sell. Your privacy isn't our product. You have the right to defend yourself. Know before you connect. Tunnel up. Disappear. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.citadelcyber.ai/privacy ## Key features - AI-powered network threat detection - Enterprise-grade VPN tunnel - One-tap VPN connection - Zero traffic logs - Detects network attack tools - Unlimited free network scanning ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly Pro Subscription | $9.99 | per month | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/citadel-vpn-and-wifi-security/id6762165977/reviews.md ### 5/5 — Good vulnerabilities testing app *2026-08-04* I got this for the VPN and was impressed by the vulnerabilities abilities. It looks pretty slick too. Every company should be actively scanning for vulnerabilities and AI is a good fit for that necessary job. ### 4/5 — Fast VPN and threat scanner? *2026-07-30* That’s pretty awesome. That’s pretty fast one button VPN app. Got it for my mom one button to connect one button to disconnect can’t be ## Frequently asked questions about Citadel VPN & WiFi Security ### What is Citadel VPN & WiFi Security? Citadel VPN & WiFi Security is a utility app that offers two layers of protection for public Wi-Fi. It includes an AI-powered network scanner to detect threats before you connect and an enterprise-grade VPN tunnel to secure your connection and mask your online identity. ### Is Citadel VPN & WiFi Security free to download? Yes, Citadel VPN & WiFi Security is free to download. The network scanning feature is also free and unlimited. The VPN service requires a subscription after a 3-day free trial. ### What are the subscription costs for Citadel VPN & WiFi Security? The VPN service is offered as a monthly subscription plan priced at $9.99 per month. Users can cancel their subscription at any time. ### Does Citadel VPN & WiFi Security log user traffic? No, Citadel VPN & WiFi Security states it has zero traffic logs. The VPN tunnel encrypts your connection, and the app does not store browsing history or activity logs. ### What devices does Citadel VPN & WiFi Security support? Citadel VPN & WiFi Security is supported on iPhone, iPad, and iPod. It is designed for users who work from anywhere and connect to various public networks. ### How often is Citadel VPN & WiFi Security updated? The app was last updated on August 26, 2026, with version 1.5.1. New tool fingerprints for detecting network attack tools are shipped with every update. ### What kind of threats can Citadel VPN & WiFi Security detect? Citadel VPN & WiFi Security can detect rogue devices, dangerous open ports, and the network signatures of common attack tools like Kali Linux, Metasploit, and Wireshark. It also flags open proxy services used for interception. ### Is Citadel VPN & WiFi Security suitable for children? Citadel VPN & WiFi Security has an age rating of 4+. While the app's functionality is for security, its complexity and target audience are geared towards adults concerned with network security. ## Version history (last 5 releases) ### Citadel VPN + WiFi Security 1.5.1 — 2026-08-26 This update makes Citadel more thorough, more powerful, and more reliable. FIXED • Resolved an issue where a scan could show only your own device instead of everything on your Wi-Fi. Scans now reliably discover every connected device — computers, phones, TVs, printers, cameras, and IoT gear. SEE YOUR WHOLE NETWORK • Full device discovery with hostnames, open ports, and detected services, so you know exactly what each device is and what it's doing. • Network Map: an interactive view of your network with your router at the center and every device around it, color-coded by risk. • Automatic deep scan runs right after the first quick scan for a complete picture — with clearer progress along the way. SMARTER THREAT DETECTION • Flags high-risk exposure like remote-access and file-sharing services (RDP, SMB, SSH), open ports, and suspicious device profiles. • Clear CRITICAL / HIGH / WARNING severity with recommended actions. ONE-TAP VPN (PREMIUM) • Secure any Wi-Fi with a fast WireGuard VPN, right from the dashboard. Encrypted with ChaCha20 — the same cipher trusted by Signal. PRO TOOLS • Built-in Ping, NSLookup, and Speed Test for quick network checks. PRIVACY FIRST • Everything runs on your device. No tracking, no analytics, no logs — ever. The VPN encrypts your traffic and never inspects or records it. MORE • Spanish language support. • Stability and performance improvements throughout. Thanks for using Citadel. Stay safe out there. Citadel just leveled up. This release delivers our most powerful local network security scan yet: • NEW automatic two-stage scanning—fast device discovery followed immediately by a deeper security analysis• Improved detection of quiet, hidden, and Linux-based devices on your Wi-Fi• Expanded threat intelligence for network behavior associated with Kali Linux, Nmap, Zenmap, Burp Suite, OWASP ZAP, mitmproxy, SpiderFoot, Metasploit-style listeners, and other security-testing tools• Broader inspection for exposed SSH, RDP, SMB, VNC, proxy, database, development, and remote-administration services• Smarter evidence correlation to identify suspicious activity while reducing false alarms• Better device and hostname identification using local network, reverse-DNS, and service evidence• Critical threats now appear first, followed by high, medium, and low-risk findings• Clearer risk explanations, supporting evidence, and recommended protective actions• More accurate device counts, improved scan reliability, and faster live results Citadel analyzes network-visible fingerprints and suspicious service behavior to help you understand what’s happening on your local Wi-Fi—especially when using public or unfamiliar networks. Citadel just leveled up. • NEW two-stage scan: an instant safety check in seconds, then a deeper AI sweep that hunts hidden and stealth devices on your WiFi • Expanded threat intelligence: recognizes the signatures of Kali Linux, ParrotOS, Metasploit, Burp Suite, SpiderFoot, Nmap, and Wireshark activity on your network • Deeper service inspection: remote access, file sharing, proxies and more, with product fingerprinting • VPN keys now stored in the iOS Keychain for hardened security • Redeem promo and offer codes right in the app • Full Spanish (Mexico) localization • Faster, more reliable launch and stability fixes across iPhone and iPad New tool fingerprints ship with every update. Know before you connect. Tunnel up. Disappear. ### Citadel VPN + WiFi Security 1.5 — 2026-08-20 Citadel just leveled up. This release delivers our most powerful local network security scan yet: • NEW automatic two-stage scanning—fast device discovery followed immediately by a deeper security analysis• Improved detection of quiet, hidden, and Linux-based devices on your Wi-Fi• Expanded threat intelligence for network behavior associated with Kali Linux, Nmap, Zenmap, Burp Suite, OWASP ZAP, mitmproxy, SpiderFoot, Metasploit-style listeners, and other security-testing tools• Broader inspection for exposed SSH, RDP, SMB, VNC, proxy, database, development, and remote-administration services• Smarter evidence correlation to identify suspicious activity while reducing false alarms• Better device and hostname identification using local network, reverse-DNS, and service evidence• Critical threats now appear first, followed by high, medium, and low-risk findings• Clearer risk explanations, supporting evidence, and recommended protective actions• More accurate device counts, improved scan reliability, and faster live results Citadel analyzes network-visible fingerprints and suspicious service behavior to help you understand what’s happening on your local Wi-Fi—especially when using public or unfamiliar networks. Citadel just leveled up. • NEW two-stage scan: an instant safety check in seconds, then a deeper AI sweep that hunts hidden and stealth devices on your WiFi • Expanded threat intelligence: recognizes the signatures of Kali Linux, ParrotOS, Metasploit, Burp Suite, SpiderFoot, Nmap, and Wireshark activity on your network • Deeper service inspection: remote access, file sharing, proxies and more, with product fingerprinting • VPN keys now stored in the iOS Keychain for hardened security • Redeem promo and offer codes right in the app • Full Spanish (Mexico) localization • Faster, more reliable launch and stability fixes across iPhone and iPad New tool fingerprints ship with every update. Know before you connect. Tunnel up. Disappear. ### Citadel VPN + WiFi Security 1.3 — 2026-06-23 What's New (App Store) • Fixed an issue where Pro subscribers were prompted to upgrade when accessing VPN • Removed TikTok Business SDK and associated tracking • Removed App Tracking Transparency prompt • General stability improvements App Review Notes This update fixes a subscription recognition bug where paying subscribers were incorrectly shown a paywall when attempting to use the VPN feature. The entitlement lookup in RevenueCat has been made more resilient. The TikTok Business SDK and ATT tracking prompt have been fully removed — the app no longer collects any advertising identifiers. ### 1.2 — 2026-06-12 Automatic Deep Scan No more guessing. The app now automatically launches a comprehensive 100+ port deep scan immediately after the quick scan completes. Every device on your network gets analyzed for vulnerabilities, open services, and suspicious behavior — no extra taps required. Watch the progress in real time with new "Deep Scan In Progress" and "Deep Scan Complete" indicators. VPN — One Tap Away Your encrypted VPN connection is now front and center on the dashboard, right next to the Scan button. No more digging through network tools to protect your traffic. One tap to scan your network, one tap to encrypt your connection. ChaCha20-Poly1305 encryption — the same cipher Signal uses. Apple Offer Code Redemption Redeem subscription offer codes directly inside the app. Tap "Redeem Apple Offer Code" on the paywall screen and Apple's native redemption sheet handles the rest. Works with any offer codes created for Citadel AI WiFi Security, including free trials, discounts, and promotional offers. Promo Codes Fixed Channel partner and promotional codes (LAUNCH50, TRIAL30, NEWUSER30) now apply correctly. A bug was causing all codes to show as expired — this has been resolved. Full Spanish Translation Every screen, button, alert, and status message is now available in Spanish (Mexico). From "ESCANEAR" to "AMENAZAS CRÍTICAS DETECTADAS" — the entire app speaks your language. Select Spanish in Settings to switch. Redesigned Network Tools Ping, NSLookup, Speed Test, TCP Ping, and DNS Lookup are now organized in a clean 3-column grid. Faster access to the diagnostic tools you need. Smart Review Prompts Love Citadel AI WiFi Security? After a few successful scans or VPN connections, you may see a quick rating prompt. Your App Store rating helps other people discover the app and trust it. We ask at most 3 times per year and never interrupt your workflow. Under the Hood • Improved scan orchestration with seamless quick-to-deep scan handoff • Better network state detection during scans • Performance and stability improvements Thank you for protecting your network with Citadel AI. Questions or feedback? Reach us at support@citadelcyber.ai ### 1.1 — 2026-06-07 The VPN takes center stage. One-tap WireGuard tunneling secured with ChaCha20 — the same cipher Signal uses — plus the two-stage scan: an instant safety gate the moment you launch, then a deeper AI sweep for anything hidden. Performance and stability improvements throughout. What's New in This Version • VPN at your fingertips — The VPN button now sits right next to Scan on the main dashboard, so you can secure your connection in one tap without hunting through menus. • Automatic deep scan — After the initial quick scan finds devices on your network, a deeper 100-port analysis now kicks off automatically. No second tap required — just open the app and get the full picture. • Improved stability — Fixed a build configuration issue that could prevent the app from launching after system updates. Got feedback? 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*