StealthOS is a native iOS application that functions as a privacy-focused sandbox environment for mobile users. The app is distributed through the Apple App Store and is developed by Olib AI. The core offering is a self-contained suite of over 19 built-in applications that operate entirely on-device, with no external API calls or server-side data transmission. Key privacy features include anti-fingerprinting capabilities that spoof Canvas, WebGL, Audio, Navigator, Screen, Timezone, Font, and Battery APIs to generate synthetic device profiles. The app also provides WebRTC leak protection and automatic removal of tracking and analytics scripts. Security features are powered by on-device AI using Apple's CoreML and NaturalLanguage frameworks. These include real-time phishing and scam detection, anti-malware protection, domain age verification via WHOIS/RDAP lookups, shared IP detection, and download scanning. All browser security features are available without a premium subscription. StealthOS includes an AES-256-GCM encrypted file storage system isolated from the device's native storage, and a password manager with TOTP 2FA support and browser autofill. Networking tools include isolated DNS-over-HTTPS configurations (supporting Cloudflare, Google, Quad9, and OpenDNS), proxy settings, and Tor network access — all scoped exclusively to the StealthOS environment. A local peer-to-peer communication feature called Connection Pool enables encrypted chat (Curve25519 + AES-256) and local multiplayer gaming over WiFi or Bluetooth without internet access. Additional built-in tools include an SSH terminal, a virtual Linux shell with 70+ commands, a code editor, voice notes with transcription, and an on-device AI assistant. The app targets individual iOS users seeking enhanced personal privacy and data control.