StealthOS

StealthOS is an iPhone application that combines multiple privacy-focused tools into a single platform. It is designed for users seeking comprehensive privacy and security on their mobile device, offering a suite of features that includes a private browser, Tor integration, encrypted vault, password manager, secure notes, on-device AI assistant, and end-to-end encrypted voice and video calls. The app emphasizes privacy by operating without requiring user accounts or tracking, and by keeping all operations on-device.

The private browser in StealthOS supports up to 50 tabs, session restore, encrypted history, encrypted downloads, and DNS-over-HTTPS. onion site support, a kill switch that halts traffic if Tor disconnects, and anti-fingerprint technology that spoofs browser fingerprints such as Canvas, WebGL, Audio, Fonts, and more. The browser engine is powered by Owl Browser, and users can switch between multiple device profiles to further obscure their identity. WebRTC leak blocking is always active to prevent real IP addresses from being exposed.

StealthOS includes an encrypted vault protected with AES-256-GCM encryption and keys stored in the device's Secure Enclave. The vault can store files, photos, downloads, notes, private documents, passwords, and PGP key pairs. Access to the vault is secured with Face ID or Touch ID, and there is no cloud sync or key escrow, ensuring that only the device owner holds the encryption keys. The password manager generates strong passwords, scores their strength, autofills logins within the app's browser and Tor, and supports TOTP for two-factor authentication with QR code scanning. Field-level encryption and biometric gating are applied to sensitive data.

Additional features include on-device AI for private assistance, voice transcription, summaries, reminders, and checklists. The app also provides end-to-end encrypted voice and video calling, which can be routed locally or via a self-hosted relay. StealthOS is open source, with its security code available on GitHub, and can be downloaded from the App Store. It does not require user accounts, collects no analytics, and is designed to operate entirely on-device for maximum privacy.